20459760

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{163}}^1\times {\mathrm{523}}^1$

素因数の和:702

約数の個数: 80

約数和(自身を含む): 63936384

約数和(自身を除く): 43476624

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 163, 240, 326, 489, 523, 652, 815, 978, 1046, 1304, 1569, 1630, 1956, 2092, 2445, 2608, 2615, 3138, 3260, 3912, 4184, 4890, 5230, 6276, 6520, 7824, 7845, 8368, 9780, 10460, 12552, 13040, 15690, 19560, 20920, 25104, 31380, 39120, 41840, 62760, 85249, 125520, 170498, 255747, 340996, 426245, 511494, 681992, 852490, 1022988, 1278735, 1363984, 1704980, 2045976, 2557470, 3409960, 4091952, 5114940, 6819920, 10229880, 20459760]

約数ペア:

[(1, 20459760), (2, 10229880), (3, 6819920), (4, 5114940), (5, 4091952), (6, 3409960), (8, 2557470), (10, 2045976), (12, 1704980), (15, 1363984), (16, 1278735), (20, 1022988), (24, 852490), (30, 681992), (40, 511494), (48, 426245), (60, 340996), (80, 255747), (120, 170498), (163, 125520), (240, 85249), (326, 62760), (489, 41840), (523, 39120), (652, 31380), (815, 25104), (978, 20920), (1046, 19560), (1304, 15690), (1569, 13040), (1630, 12552), (1956, 10460), (2092, 9780), (2445, 8368), (2608, 7845), (2615, 7824), (3138, 6520), (3260, 6276), (3912, 5230), (4184, 4890)]