20667570

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:440

約数の個数: 128

約数和(自身を含む): 64696320

約数和(自身を除く): 44028750

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 23, 30, 33, 35, 42, 46, 55, 66, 69, 70, 77, 105, 110, 115, 138, 154, 161, 165, 210, 230, 231, 253, 322, 330, 345, 385, 389, 462, 483, 506, 690, 759, 770, 778, 805, 966, 1155, 1167, 1265, 1518, 1610, 1771, 1945, 2310, 2334, 2415, 2530, 2723, 3542, 3795, 3890, 4279, 4830, 5313, 5446, 5835, 7590, 8169, 8558, 8855, 8947, 10626, 11670, 12837, 13615, 16338, 17710, 17894, 21395, 25674, 26565, 26841, 27230, 29953, 40845, 42790, 44735, 53130, 53682, 59906, 62629, 64185, 81690, 89470, 89859, 98417, 125258, 128370, 134205, 149765, 179718, 187887, 196834, 268410, 295251, 299530, 313145, 375774, 449295, 492085, 590502, 626290, 688919, 898590, 939435, 984170, 1377838, 1476255, 1878870, 2066757, 2952510, 3444595, 4133514, 6889190, 10333785, 20667570]

約数ペア:

[(1, 20667570), (2, 10333785), (3, 6889190), (5, 4133514), (6, 3444595), (7, 2952510), (10, 2066757), (11, 1878870), (14, 1476255), (15, 1377838), (21, 984170), (22, 939435), (23, 898590), (30, 688919), (33, 626290), (35, 590502), (42, 492085), (46, 449295), (55, 375774), (66, 313145), (69, 299530), (70, 295251), (77, 268410), (105, 196834), (110, 187887), (115, 179718), (138, 149765), (154, 134205), (161, 128370), (165, 125258), (210, 98417), (230, 89859), (231, 89470), (253, 81690), (322, 64185), (330, 62629), (345, 59906), (385, 53682), (389, 53130), (462, 44735), (483, 42790), (506, 40845), (690, 29953), (759, 27230), (770, 26841), (778, 26565), (805, 25674), (966, 21395), (1155, 17894), (1167, 17710), (1265, 16338), (1518, 13615), (1610, 12837), (1771, 11670), (1945, 10626), (2310, 8947), (2334, 8855), (2415, 8558), (2530, 8169), (2723, 7590), (3542, 5835), (3795, 5446), (3890, 5313), (4279, 4830)]