642000580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{11173}}^1$

素因数の和:11225

約数の個数: 72

約数和(自身を含む): 1545900552

約数和(自身を除く): 903899972

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 169, 170, 221, 260, 338, 340, 442, 676, 845, 884, 1105, 1690, 2210, 2873, 3380, 4420, 5746, 11173, 11492, 14365, 22346, 28730, 44692, 55865, 57460, 111730, 145249, 189941, 223460, 290498, 379882, 580996, 726245, 759764, 949705, 1452490, 1888237, 1899410, 2469233, 2904980, 3776474, 3798820, 4938466, 7552948, 9441185, 9876932, 12346165, 18882370, 24692330, 32100029, 37764740, 49384660, 64200058, 128400116, 160500145, 321000290, 642000580]

約数ペア:

[(1, 642000580), (2, 321000290), (4, 160500145), (5, 128400116), (10, 64200058), (13, 49384660), (17, 37764740), (20, 32100029), (26, 24692330), (34, 18882370), (52, 12346165), (65, 9876932), (68, 9441185), (85, 7552948), (130, 4938466), (169, 3798820), (170, 3776474), (221, 2904980), (260, 2469233), (338, 1899410), (340, 1888237), (442, 1452490), (676, 949705), (845, 759764), (884, 726245), (1105, 580996), (1690, 379882), (2210, 290498), (2873, 223460), (3380, 189941), (4420, 145249), (5746, 111730), (11173, 57460), (11492, 55865), (14365, 44692), (22346, 28730)]