21451950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{193}}^1$

素因数の和:243

約数の個数: 144

約数和(自身を含む): 65672880

約数和(自身を除く): 44220930

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 19, 25, 26, 30, 38, 39, 45, 50, 57, 65, 75, 78, 90, 95, 114, 117, 130, 150, 171, 190, 193, 195, 225, 234, 247, 285, 325, 342, 386, 390, 450, 475, 494, 570, 579, 585, 650, 741, 855, 950, 965, 975, 1158, 1170, 1235, 1425, 1482, 1710, 1737, 1930, 1950, 2223, 2470, 2509, 2850, 2895, 2925, 3474, 3667, 3705, 4275, 4446, 4825, 5018, 5790, 5850, 6175, 7334, 7410, 7527, 8550, 8685, 9650, 11001, 11115, 12350, 12545, 14475, 15054, 17370, 18335, 18525, 22002, 22230, 22581, 25090, 28950, 33003, 36670, 37050, 37635, 43425, 45162, 47671, 55005, 55575, 62725, 66006, 75270, 86850, 91675, 95342, 110010, 111150, 112905, 125450, 143013, 165015, 183350, 188175, 225810, 238355, 275025, 286026, 330030, 376350, 429039, 476710, 550050, 564525, 715065, 825075, 858078, 1129050, 1191775, 1430130, 1650150, 2145195, 2383550, 3575325, 4290390, 7150650, 10725975, 21451950]

約数ペア:

[(1, 21451950), (2, 10725975), (3, 7150650), (5, 4290390), (6, 3575325), (9, 2383550), (10, 2145195), (13, 1650150), (15, 1430130), (18, 1191775), (19, 1129050), (25, 858078), (26, 825075), (30, 715065), (38, 564525), (39, 550050), (45, 476710), (50, 429039), (57, 376350), (65, 330030), (75, 286026), (78, 275025), (90, 238355), (95, 225810), (114, 188175), (117, 183350), (130, 165015), (150, 143013), (171, 125450), (190, 112905), (193, 111150), (195, 110010), (225, 95342), (234, 91675), (247, 86850), (285, 75270), (325, 66006), (342, 62725), (386, 55575), (390, 55005), (450, 47671), (475, 45162), (494, 43425), (570, 37635), (579, 37050), (585, 36670), (650, 33003), (741, 28950), (855, 25090), (950, 22581), (965, 22230), (975, 22002), (1158, 18525), (1170, 18335), (1235, 17370), (1425, 15054), (1482, 14475), (1710, 12545), (1737, 12350), (1930, 11115), (1950, 11001), (2223, 9650), (2470, 8685), (2509, 8550), (2850, 7527), (2895, 7410), (2925, 7334), (3474, 6175), (3667, 5850), (3705, 5790), (4275, 5018), (4446, 4825)]