80671640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:625

約数の個数: 96

約数和(自身を含む): 214228800

約数和(自身を除く): 133557160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 79, 98, 140, 158, 196, 245, 280, 316, 392, 395, 490, 521, 553, 632, 790, 980, 1042, 1106, 1580, 1960, 2084, 2212, 2605, 2765, 3160, 3647, 3871, 4168, 4424, 5210, 5530, 7294, 7742, 10420, 11060, 14588, 15484, 18235, 19355, 20840, 22120, 25529, 29176, 30968, 36470, 38710, 41159, 51058, 72940, 77420, 82318, 102116, 127645, 145880, 154840, 164636, 204232, 205795, 255290, 288113, 329272, 411590, 510580, 576226, 823180, 1021160, 1152452, 1440565, 1646360, 2016791, 2304904, 2881130, 4033582, 5762260, 8067164, 10083955, 11524520, 16134328, 20167910, 40335820, 80671640]

約数ペア:

[(1, 80671640), (2, 40335820), (4, 20167910), (5, 16134328), (7, 11524520), (8, 10083955), (10, 8067164), (14, 5762260), (20, 4033582), (28, 2881130), (35, 2304904), (40, 2016791), (49, 1646360), (56, 1440565), (70, 1152452), (79, 1021160), (98, 823180), (140, 576226), (158, 510580), (196, 411590), (245, 329272), (280, 288113), (316, 255290), (392, 205795), (395, 204232), (490, 164636), (521, 154840), (553, 145880), (632, 127645), (790, 102116), (980, 82318), (1042, 77420), (1106, 72940), (1580, 51058), (1960, 41159), (2084, 38710), (2212, 36470), (2605, 30968), (2765, 29176), (3160, 25529), (3647, 22120), (3871, 20840), (4168, 19355), (4424, 18235), (5210, 15484), (5530, 14588), (7294, 11060), (7742, 10420)]