7989940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{263}}^1$

素因数の和:317

約数の個数: 72

約数和(自身を含む): 20224512

約数和(自身を除く): 12234572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 263, 310, 434, 490, 526, 620, 868, 980, 1052, 1085, 1315, 1519, 1841, 2170, 2630, 3038, 3682, 4340, 5260, 6076, 7364, 7595, 8153, 9205, 12887, 15190, 16306, 18410, 25774, 30380, 32612, 36820, 40765, 51548, 57071, 64435, 81530, 114142, 128870, 163060, 228284, 257740, 285355, 399497, 570710, 798994, 1141420, 1597988, 1997485, 3994970, 7989940]

約数ペア:

[(1, 7989940), (2, 3994970), (4, 1997485), (5, 1597988), (7, 1141420), (10, 798994), (14, 570710), (20, 399497), (28, 285355), (31, 257740), (35, 228284), (49, 163060), (62, 128870), (70, 114142), (98, 81530), (124, 64435), (140, 57071), (155, 51548), (196, 40765), (217, 36820), (245, 32612), (263, 30380), (310, 25774), (434, 18410), (490, 16306), (526, 15190), (620, 12887), (868, 9205), (980, 8153), (1052, 7595), (1085, 7364), (1315, 6076), (1519, 5260), (1841, 4340), (2170, 3682), (2630, 3038)]