20761560

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{571}}^1$

素因数の和:689

約数の個数: 96

約数和(自身を含む): 68262480

約数和(自身を除く): 47500920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 101, 120, 180, 202, 303, 360, 404, 505, 571, 606, 808, 909, 1010, 1142, 1212, 1515, 1713, 1818, 2020, 2284, 2424, 2855, 3030, 3426, 3636, 4040, 4545, 4568, 5139, 5710, 6060, 6852, 7272, 8565, 9090, 10278, 11420, 12120, 13704, 17130, 18180, 20556, 22840, 25695, 34260, 36360, 41112, 51390, 57671, 68520, 102780, 115342, 173013, 205560, 230684, 288355, 346026, 461368, 519039, 576710, 692052, 865065, 1038078, 1153420, 1384104, 1730130, 2076156, 2306840, 2595195, 3460260, 4152312, 5190390, 6920520, 10380780, 20761560]

約数ペア:

[(1, 20761560), (2, 10380780), (3, 6920520), (4, 5190390), (5, 4152312), (6, 3460260), (8, 2595195), (9, 2306840), (10, 2076156), (12, 1730130), (15, 1384104), (18, 1153420), (20, 1038078), (24, 865065), (30, 692052), (36, 576710), (40, 519039), (45, 461368), (60, 346026), (72, 288355), (90, 230684), (101, 205560), (120, 173013), (180, 115342), (202, 102780), (303, 68520), (360, 57671), (404, 51390), (505, 41112), (571, 36360), (606, 34260), (808, 25695), (909, 22840), (1010, 20556), (1142, 18180), (1212, 17130), (1515, 13704), (1713, 12120), (1818, 11420), (2020, 10278), (2284, 9090), (2424, 8565), (2855, 7272), (3030, 6852), (3426, 6060), (3636, 5710), (4040, 5139), (4545, 4568)]