64877420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{269}}^1\times {\mathrm{389}}^1$

素因数の和:698

約数の個数: 48

約数和(自身を含む): 141523200

約数和(自身を除く): 76645780

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 269, 310, 389, 538, 620, 778, 1076, 1345, 1556, 1945, 2690, 3890, 5380, 7780, 8339, 12059, 16678, 24118, 33356, 41695, 48236, 60295, 83390, 104641, 120590, 166780, 209282, 241180, 418564, 523205, 1046410, 2092820, 3243871, 6487742, 12975484, 16219355, 32438710, 64877420]

約数ペア:

[(1, 64877420), (2, 32438710), (4, 16219355), (5, 12975484), (10, 6487742), (20, 3243871), (31, 2092820), (62, 1046410), (124, 523205), (155, 418564), (269, 241180), (310, 209282), (389, 166780), (538, 120590), (620, 104641), (778, 83390), (1076, 60295), (1345, 48236), (1556, 41695), (1945, 33356), (2690, 24118), (3890, 16678), (5380, 12059), (7780, 8339)]