80901940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2663}}^1$

素因数の和:2717

約数の個数: 72

約数和(自身を含む): 204083712

約数和(自身を除く): 123181772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 98, 124, 140, 155, 196, 217, 245, 310, 434, 490, 620, 868, 980, 1085, 1519, 2170, 2663, 3038, 4340, 5326, 6076, 7595, 10652, 13315, 15190, 18641, 26630, 30380, 37282, 53260, 74564, 82553, 93205, 130487, 165106, 186410, 260974, 330212, 372820, 412765, 521948, 577871, 652435, 825530, 1155742, 1304870, 1651060, 2311484, 2609740, 2889355, 4045097, 5778710, 8090194, 11557420, 16180388, 20225485, 40450970, 80901940]

約数ペア:

[(1, 80901940), (2, 40450970), (4, 20225485), (5, 16180388), (7, 11557420), (10, 8090194), (14, 5778710), (20, 4045097), (28, 2889355), (31, 2609740), (35, 2311484), (49, 1651060), (62, 1304870), (70, 1155742), (98, 825530), (124, 652435), (140, 577871), (155, 521948), (196, 412765), (217, 372820), (245, 330212), (310, 260974), (434, 186410), (490, 165106), (620, 130487), (868, 93205), (980, 82553), (1085, 74564), (1519, 53260), (2170, 37282), (2663, 30380), (3038, 26630), (4340, 18641), (5326, 15190), (6076, 13315), (7595, 10652)]