21319920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29611}}^1$

素因数の和:29630

約数の個数: 60

約数和(自身を含む): 71601816

約数和(自身を除く): 50281896

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 29611, 59222, 88833, 118444, 148055, 177666, 236888, 266499, 296110, 355332, 444165, 473776, 532998, 592220, 710664, 888330, 1065996, 1184440, 1332495, 1421328, 1776660, 2131992, 2368880, 2664990, 3553320, 4263984, 5329980, 7106640, 10659960, 21319920]

約数ペア:

[(1, 21319920), (2, 10659960), (3, 7106640), (4, 5329980), (5, 4263984), (6, 3553320), (8, 2664990), (9, 2368880), (10, 2131992), (12, 1776660), (15, 1421328), (16, 1332495), (18, 1184440), (20, 1065996), (24, 888330), (30, 710664), (36, 592220), (40, 532998), (45, 473776), (48, 444165), (60, 355332), (72, 296110), (80, 266499), (90, 236888), (120, 177666), (144, 148055), (180, 118444), (240, 88833), (360, 59222), (720, 29611)]