1639234040

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{101}}^1$

素因数の和:345

約数の個数: 128

約数和(自身を含む): 3886444800

約数和(自身を除く): 2247210760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 89, 94, 97, 101, 178, 188, 194, 202, 235, 356, 376, 388, 404, 445, 470, 485, 505, 712, 776, 808, 890, 940, 970, 1010, 1780, 1880, 1940, 2020, 3560, 3880, 4040, 4183, 4559, 4747, 8366, 8633, 8989, 9118, 9494, 9797, 16732, 17266, 17978, 18236, 18988, 19594, 20915, 22795, 23735, 33464, 34532, 35956, 36472, 37976, 39188, 41830, 43165, 44945, 45590, 47470, 48985, 69064, 71912, 78376, 83660, 86330, 89890, 91180, 94940, 97970, 167320, 172660, 179780, 182360, 189880, 195940, 345320, 359560, 391880, 405751, 422483, 460459, 811502, 844966, 871933, 920918, 1623004, 1689932, 1743866, 1841836, 2028755, 2112415, 2302295, 3246008, 3379864, 3487732, 3683672, 4057510, 4224830, 4359665, 4604590, 6975464, 8115020, 8449660, 8719330, 9209180, 16230040, 16899320, 17438660, 18418360, 34877320, 40980851, 81961702, 163923404, 204904255, 327846808, 409808510, 819617020, 1639234040]

約数ペア:

[(1, 1639234040), (2, 819617020), (4, 409808510), (5, 327846808), (8, 204904255), (10, 163923404), (20, 81961702), (40, 40980851), (47, 34877320), (89, 18418360), (94, 17438660), (97, 16899320), (101, 16230040), (178, 9209180), (188, 8719330), (194, 8449660), (202, 8115020), (235, 6975464), (356, 4604590), (376, 4359665), (388, 4224830), (404, 4057510), (445, 3683672), (470, 3487732), (485, 3379864), (505, 3246008), (712, 2302295), (776, 2112415), (808, 2028755), (890, 1841836), (940, 1743866), (970, 1689932), (1010, 1623004), (1780, 920918), (1880, 871933), (1940, 844966), (2020, 811502), (3560, 460459), (3880, 422483), (4040, 405751), (4183, 391880), (4559, 359560), (4747, 345320), (8366, 195940), (8633, 189880), (8989, 182360), (9118, 179780), (9494, 172660), (9797, 167320), (16732, 97970), (17266, 94940), (17978, 91180), (18236, 89890), (18988, 86330), (19594, 83660), (20915, 78376), (22795, 71912), (23735, 69064), (33464, 48985), (34532, 47470), (35956, 45590), (36472, 44945), (37976, 43165), (39188, 41830)]