81974060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{233}}^1\times {\mathrm{359}}^1$

素因数の和:615

約数の個数: 72

約数和(自身を含む): 201670560

約数和(自身を除く): 119696500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 233, 245, 359, 466, 490, 718, 932, 980, 1165, 1436, 1631, 1795, 2330, 2513, 3262, 3590, 4660, 5026, 6524, 7180, 8155, 10052, 11417, 12565, 16310, 17591, 22834, 25130, 32620, 35182, 45668, 50260, 57085, 70364, 83647, 87955, 114170, 167294, 175910, 228340, 334588, 351820, 418235, 585529, 836470, 1171058, 1672940, 2342116, 2927645, 4098703, 5855290, 8197406, 11710580, 16394812, 20493515, 40987030, 81974060]

約数ペア:

[(1, 81974060), (2, 40987030), (4, 20493515), (5, 16394812), (7, 11710580), (10, 8197406), (14, 5855290), (20, 4098703), (28, 2927645), (35, 2342116), (49, 1672940), (70, 1171058), (98, 836470), (140, 585529), (196, 418235), (233, 351820), (245, 334588), (359, 228340), (466, 175910), (490, 167294), (718, 114170), (932, 87955), (980, 83647), (1165, 70364), (1436, 57085), (1631, 50260), (1795, 45668), (2330, 35182), (2513, 32620), (3262, 25130), (3590, 22834), (4660, 17591), (5026, 16310), (6524, 12565), (7180, 11417), (8155, 10052)]