28720450

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{661}}^1$

素因数の和:763

約数の個数: 48

約数和(自身を含む): 59103360

約数和(自身を除く): 30382910

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 79, 110, 158, 275, 395, 550, 661, 790, 869, 1322, 1738, 1975, 3305, 3950, 4345, 6610, 7271, 8690, 14542, 16525, 21725, 33050, 36355, 43450, 52219, 72710, 104438, 181775, 261095, 363550, 522190, 574409, 1148818, 1305475, 2610950, 2872045, 5744090, 14360225, 28720450]

約数ペア:

[(1, 28720450), (2, 14360225), (5, 5744090), (10, 2872045), (11, 2610950), (22, 1305475), (25, 1148818), (50, 574409), (55, 522190), (79, 363550), (110, 261095), (158, 181775), (275, 104438), (395, 72710), (550, 52219), (661, 43450), (790, 36355), (869, 33050), (1322, 21725), (1738, 16525), (1975, 14542), (3305, 8690), (3950, 7271), (4345, 6610)]