28889900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{313}}^1$

素因数の和:411

約数の個数: 72

約数和(自身を含む): 68683104

約数和(自身を除く): 39793204

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 71, 100, 130, 142, 260, 284, 313, 325, 355, 626, 650, 710, 923, 1252, 1300, 1420, 1565, 1775, 1846, 3130, 3550, 3692, 4069, 4615, 6260, 7100, 7825, 8138, 9230, 15650, 16276, 18460, 20345, 22223, 23075, 31300, 40690, 44446, 46150, 81380, 88892, 92300, 101725, 111115, 203450, 222230, 288899, 406900, 444460, 555575, 577798, 1111150, 1155596, 1444495, 2222300, 2888990, 5777980, 7222475, 14444950, 28889900]

約数ペア:

[(1, 28889900), (2, 14444950), (4, 7222475), (5, 5777980), (10, 2888990), (13, 2222300), (20, 1444495), (25, 1155596), (26, 1111150), (50, 577798), (52, 555575), (65, 444460), (71, 406900), (100, 288899), (130, 222230), (142, 203450), (260, 111115), (284, 101725), (313, 92300), (325, 88892), (355, 81380), (626, 46150), (650, 44446), (710, 40690), (923, 31300), (1252, 23075), (1300, 22223), (1420, 20345), (1565, 18460), (1775, 16276), (1846, 15650), (3130, 9230), (3550, 8138), (3692, 7825), (4069, 7100), (4615, 6260)]