21055380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8161}}^1$

素因数の和:8216

約数の個数: 48

約数和(自身を含む): 60333504

約数和(自身を除く): 39278124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8161, 16322, 24483, 32644, 40805, 48966, 81610, 97932, 122415, 163220, 244830, 350923, 489660, 701846, 1052769, 1403692, 1754615, 2105538, 3509230, 4211076, 5263845, 7018460, 10527690, 21055380]

約数ペア:

[(1, 21055380), (2, 10527690), (3, 7018460), (4, 5263845), (5, 4211076), (6, 3509230), (10, 2105538), (12, 1754615), (15, 1403692), (20, 1052769), (30, 701846), (43, 489660), (60, 350923), (86, 244830), (129, 163220), (172, 122415), (215, 97932), (258, 81610), (430, 48966), (516, 40805), (645, 32644), (860, 24483), (1290, 16322), (2580, 8161)]