221800020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1$

素因数の和:474

約数の個数: 192

約数和(自身を含む): 726485760

約数和(自身を除く): 504685740

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 43, 51, 52, 60, 65, 68, 78, 85, 86, 102, 129, 130, 156, 170, 172, 195, 204, 215, 221, 255, 258, 260, 340, 389, 390, 430, 442, 510, 516, 559, 645, 663, 731, 778, 780, 860, 884, 1020, 1105, 1118, 1167, 1290, 1326, 1462, 1556, 1677, 1945, 2193, 2210, 2236, 2334, 2580, 2652, 2795, 2924, 3315, 3354, 3655, 3890, 4386, 4420, 4668, 5057, 5590, 5835, 6613, 6630, 6708, 7310, 7780, 8385, 8772, 9503, 10114, 10965, 11180, 11670, 13226, 13260, 14620, 15171, 16727, 16770, 19006, 19839, 20228, 21930, 23340, 25285, 26452, 28509, 30342, 33065, 33454, 33540, 38012, 39678, 43860, 47515, 50181, 50570, 57018, 60684, 66130, 66908, 75855, 79356, 83635, 85969, 95030, 99195, 100362, 101140, 114036, 132260, 142545, 151710, 167270, 171938, 190060, 198390, 200724, 217451, 250905, 257907, 284359, 285090, 303420, 334540, 343876, 396780, 429845, 434902, 501810, 515814, 568718, 570180, 652353, 853077, 859690, 869804, 1003620, 1031628, 1087255, 1137436, 1289535, 1304706, 1421795, 1706154, 1719380, 2174510, 2579070, 2609412, 2843590, 3261765, 3412308, 3696667, 4265385, 4349020, 5158140, 5687180, 6523530, 7393334, 8530770, 11090001, 13047060, 14786668, 17061540, 18483335, 22180002, 36966670, 44360004, 55450005, 73933340, 110900010, 221800020]

約数ペア:

[(1, 221800020), (2, 110900010), (3, 73933340), (4, 55450005), (5, 44360004), (6, 36966670), (10, 22180002), (12, 18483335), (13, 17061540), (15, 14786668), (17, 13047060), (20, 11090001), (26, 8530770), (30, 7393334), (34, 6523530), (39, 5687180), (43, 5158140), (51, 4349020), (52, 4265385), (60, 3696667), (65, 3412308), (68, 3261765), (78, 2843590), (85, 2609412), (86, 2579070), (102, 2174510), (129, 1719380), (130, 1706154), (156, 1421795), (170, 1304706), (172, 1289535), (195, 1137436), (204, 1087255), (215, 1031628), (221, 1003620), (255, 869804), (258, 859690), (260, 853077), (340, 652353), (389, 570180), (390, 568718), (430, 515814), (442, 501810), (510, 434902), (516, 429845), (559, 396780), (645, 343876), (663, 334540), (731, 303420), (778, 285090), (780, 284359), (860, 257907), (884, 250905), (1020, 217451), (1105, 200724), (1118, 198390), (1167, 190060), (1290, 171938), (1326, 167270), (1462, 151710), (1556, 142545), (1677, 132260), (1945, 114036), (2193, 101140), (2210, 100362), (2236, 99195), (2334, 95030), (2580, 85969), (2652, 83635), (2795, 79356), (2924, 75855), (3315, 66908), (3354, 66130), (3655, 60684), (3890, 57018), (4386, 50570), (4420, 50181), (4668, 47515), (5057, 43860), (5590, 39678), (5835, 38012), (6613, 33540), (6630, 33454), (6708, 33065), (7310, 30342), (7780, 28509), (8385, 26452), (8772, 25285), (9503, 23340), (10114, 21930), (10965, 20228), (11180, 19839), (11670, 19006), (13226, 16770), (13260, 16727), (14620, 15171)]