1638259901460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{25931}}^1$

素因数の和:26021

約数の個数: 864

約数和(自身を含む): 6779267913600

約数和(自身を除く): 5141008012140

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 19, 20, 21, 26, 28, 29, 30, 35, 36, 38, 39, 42, 45, 49, 52, 57, 58, 60, 63, 65, 70, 76, 78, 84, 87, 90, 91, 95, 98, 105, 114, 116, 117, 126, 130, 133, 140, 145, 147, 156, 171, 174, 180, 182, 190, 195, 196, 203, 210, 228, 234, 245, 247, 252, 260, 261, 266, 273, 285, 290, 294, 315, 342, 348, 364, 377, 380, 390, 399, 406, 420, 435, 441, 455, 468, 490, 494, 522, 532, 546, 551, 570, 580, 585, 588, 609, 630, 637, 665, 684, 735, 741, 754, 780, 798, 812, 819, 855, 870, 882, 910, 931, 980, 988, 1015, 1044, 1092, 1102, 1131, 1140, 1170, 1197, 1218, 1235, 1260, 1274, 1305, 1330, 1365, 1421, 1470, 1482, 1508, 1596, 1638, 1653, 1710, 1729, 1740, 1764, 1820, 1827, 1862, 1885, 1911, 1995, 2030, 2204, 2205, 2223, 2262, 2340, 2394, 2436, 2470, 2548, 2610, 2639, 2660, 2730, 2755, 2793, 2842, 2940, 2964, 3045, 3185, 3276, 3306, 3393, 3420, 3458, 3654, 3705, 3724, 3770, 3822, 3857, 3990, 4060, 4095, 4263, 4410, 4446, 4524, 4655, 4788, 4940, 4959, 5187, 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約数ペア:

[(1, 1638259901460), (2, 819129950730), (3, 546086633820), (4, 409564975365), (5, 327651980292), (6, 273043316910), (7, 234037128780), (9, 182028877940), (10, 163825990146), (12, 136521658455), (13, 126019992420), (14, 117018564390), (15, 109217326764), (18, 91014438970), (19, 86224205340), (20, 81912995073), (21, 78012376260), (26, 63009996210), (28, 58509282195), (29, 56491720740), (30, 54608663382), (35, 46807425756), (36, 45507219485), (38, 43112102670), (39, 42006664140), (42, 39006188130), (45, 36405775588), (49, 33433875540), (52, 31504998105), (57, 28741401780), (58, 28245860370), (60, 27304331691), (63, 26004125420), (65, 25203998484), (70, 23403712878), (76, 21556051335), (78, 21003332070), (84, 19503094065), (87, 18830573580), (90, 18202887794), (91, 18002856060), (95, 17244841068), (98, 16716937770), (105, 15602475252), (114, 14370700890), (116, 14122930185), (117, 14002221380), (126, 13002062710), (130, 12601999242), (133, 12317743620), (140, 11701856439), (145, 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(777930, 2105922), (809970, 2022618), (831285, 1970756), (902538, 1815170), (907585, 1805076), (933516, 1754935), (971964, 1685515), (985378, 1662570), (1002820, 1633653), (1011309, 1619940), (1052961, 1555860), (1089102, 1504230), (1089270, 1503998), (1108380, 1478067), (1166895, 1403948), (1214955, 1348412), (1270619, 1289340)]