20940280

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{467}}^1$

素因数の和:556

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 29603720

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 59, 76, 95, 118, 152, 190, 236, 295, 380, 467, 472, 590, 760, 934, 1121, 1180, 1868, 2242, 2335, 2360, 3736, 4484, 4670, 5605, 8873, 8968, 9340, 11210, 17746, 18680, 22420, 27553, 35492, 44365, 44840, 55106, 70984, 88730, 110212, 137765, 177460, 220424, 275530, 354920, 523507, 551060, 1047014, 1102120, 2094028, 2617535, 4188056, 5235070, 10470140, 20940280]

約数ペア:

[(1, 20940280), (2, 10470140), (4, 5235070), (5, 4188056), (8, 2617535), (10, 2094028), (19, 1102120), (20, 1047014), (38, 551060), (40, 523507), (59, 354920), (76, 275530), (95, 220424), (118, 177460), (152, 137765), (190, 110212), (236, 88730), (295, 70984), (380, 55106), (467, 44840), (472, 44365), (590, 35492), (760, 27553), (934, 22420), (1121, 18680), (1180, 17746), (1868, 11210), (2242, 9340), (2335, 8968), (2360, 8873), (3736, 5605), (4484, 4670)]