21355620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1$

素因数の和:186

約数の個数: 192

約数和(自身を含む): 74511360

約数和(自身を除く): 53155740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 15, 19, 20, 22, 26, 30, 33, 38, 39, 44, 52, 55, 57, 60, 65, 66, 76, 78, 95, 110, 114, 130, 131, 132, 143, 156, 165, 190, 195, 209, 220, 228, 247, 260, 262, 285, 286, 330, 380, 390, 393, 418, 429, 494, 524, 570, 572, 627, 655, 660, 715, 741, 780, 786, 836, 858, 988, 1045, 1140, 1235, 1254, 1310, 1430, 1441, 1482, 1572, 1703, 1716, 1965, 2090, 2145, 2470, 2489, 2508, 2620, 2717, 2860, 2882, 2964, 3135, 3406, 3705, 3930, 4180, 4290, 4323, 4940, 4978, 5109, 5434, 5764, 6270, 6812, 7205, 7410, 7467, 7860, 8151, 8515, 8580, 8646, 9956, 10218, 10868, 12445, 12540, 13585, 14410, 14820, 14934, 16302, 17030, 17292, 18733, 20436, 21615, 24890, 25545, 27170, 27379, 28820, 29868, 32357, 32604, 34060, 37335, 37466, 40755, 43230, 49780, 51090, 54340, 54758, 56199, 64714, 74670, 74932, 81510, 82137, 86460, 93665, 97071, 102180, 109516, 112398, 129428, 136895, 149340, 161785, 163020, 164274, 187330, 194142, 224796, 273790, 280995, 323570, 328548, 355927, 374660, 388284, 410685, 485355, 547580, 561990, 647140, 711854, 821370, 970710, 1067781, 1123980, 1423708, 1642740, 1779635, 1941420, 2135562, 3559270, 4271124, 5338905, 7118540, 10677810, 21355620]

約数ペア:

[(1, 21355620), (2, 10677810), (3, 7118540), (4, 5338905), (5, 4271124), (6, 3559270), (10, 2135562), (11, 1941420), (12, 1779635), (13, 1642740), (15, 1423708), (19, 1123980), (20, 1067781), (22, 970710), (26, 821370), (30, 711854), (33, 647140), (38, 561990), (39, 547580), (44, 485355), (52, 410685), (55, 388284), (57, 374660), (60, 355927), (65, 328548), (66, 323570), (76, 280995), (78, 273790), (95, 224796), (110, 194142), (114, 187330), (130, 164274), (131, 163020), (132, 161785), (143, 149340), (156, 136895), (165, 129428), (190, 112398), (195, 109516), (209, 102180), (220, 97071), (228, 93665), (247, 86460), (260, 82137), (262, 81510), (285, 74932), (286, 74670), (330, 64714), (380, 56199), (390, 54758), (393, 54340), (418, 51090), (429, 49780), (494, 43230), (524, 40755), (570, 37466), (572, 37335), (627, 34060), (655, 32604), (660, 32357), (715, 29868), (741, 28820), (780, 27379), (786, 27170), (836, 25545), (858, 24890), (988, 21615), (1045, 20436), (1140, 18733), (1235, 17292), (1254, 17030), (1310, 16302), (1430, 14934), (1441, 14820), (1482, 14410), (1572, 13585), (1703, 12540), (1716, 12445), (1965, 10868), (2090, 10218), (2145, 9956), (2470, 8646), (2489, 8580), (2508, 8515), (2620, 8151), (2717, 7860), (2860, 7467), (2882, 7410), (2964, 7205), (3135, 6812), (3406, 6270), (3705, 5764), (3930, 5434), (4180, 5109), (4290, 4978), (4323, 4940)]