212360980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{1997}}^1$

素因数の和:2428

約数の個数: 48

約数和(自身を含む): 481677840

約数和(自身を除く): 269316860

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 409, 818, 1636, 1997, 2045, 3994, 4090, 5317, 7988, 8180, 9985, 10634, 19970, 21268, 25961, 26585, 39940, 51922, 53170, 103844, 106340, 129805, 259610, 519220, 816773, 1633546, 3267092, 4083865, 8167730, 10618049, 16335460, 21236098, 42472196, 53090245, 106180490, 212360980]

約数ペア:

[(1, 212360980), (2, 106180490), (4, 53090245), (5, 42472196), (10, 21236098), (13, 16335460), (20, 10618049), (26, 8167730), (52, 4083865), (65, 3267092), (130, 1633546), (260, 816773), (409, 519220), (818, 259610), (1636, 129805), (1997, 106340), (2045, 103844), (3994, 53170), (4090, 51922), (5317, 39940), (7988, 26585), (8180, 25961), (9985, 21268), (10634, 19970)]