28896920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{911}}^1$

素因数の和:996

約数の個数: 64

約数和(自身を含む): 71245440

約数和(自身を除く): 42348520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 911, 1220, 1586, 1822, 2440, 3172, 3644, 3965, 4555, 6344, 7288, 7930, 9110, 11843, 15860, 18220, 23686, 31720, 36440, 47372, 55571, 59215, 94744, 111142, 118430, 222284, 236860, 277855, 444568, 473720, 555710, 722423, 1111420, 1444846, 2222840, 2889692, 3612115, 5779384, 7224230, 14448460, 28896920]

約数ペア:

[(1, 28896920), (2, 14448460), (4, 7224230), (5, 5779384), (8, 3612115), (10, 2889692), (13, 2222840), (20, 1444846), (26, 1111420), (40, 722423), (52, 555710), (61, 473720), (65, 444568), (104, 277855), (122, 236860), (130, 222284), (244, 118430), (260, 111142), (305, 94744), (488, 59215), (520, 55571), (610, 47372), (793, 36440), (911, 31720), (1220, 23686), (1586, 18220), (1822, 15860), (2440, 11843), (3172, 9110), (3644, 7930), (3965, 7288), (4555, 6344)]