89581940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20641}}^1$

素因数の和:20688

約数の個数: 48

約数和(自身を含む): 221942784

約数和(自身を除く): 132360844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 20641, 41282, 82564, 103205, 144487, 206410, 288974, 412820, 577948, 639871, 722435, 1279742, 1444870, 2559484, 2889740, 3199355, 4479097, 6398710, 8958194, 12797420, 17916388, 22395485, 44790970, 89581940]

約数ペア:

[(1, 89581940), (2, 44790970), (4, 22395485), (5, 17916388), (7, 12797420), (10, 8958194), (14, 6398710), (20, 4479097), (28, 3199355), (31, 2889740), (35, 2559484), (62, 1444870), (70, 1279742), (124, 722435), (140, 639871), (155, 577948), (217, 412820), (310, 288974), (434, 206410), (620, 144487), (868, 103205), (1085, 82564), (2170, 41282), (4340, 20641)]