21555300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5527}}^1$

素因数の和:5557

約数の個数: 72

約数和(自身を含む): 67176256

約数和(自身を除く): 45620956

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 50, 52, 60, 65, 75, 78, 100, 130, 150, 156, 195, 260, 300, 325, 390, 650, 780, 975, 1300, 1950, 3900, 5527, 11054, 16581, 22108, 27635, 33162, 55270, 66324, 71851, 82905, 110540, 138175, 143702, 165810, 215553, 276350, 287404, 331620, 359255, 414525, 431106, 552700, 718510, 829050, 862212, 1077765, 1437020, 1658100, 1796275, 2155530, 3592550, 4311060, 5388825, 7185100, 10777650, 21555300]

約数ペア:

[(1, 21555300), (2, 10777650), (3, 7185100), (4, 5388825), (5, 4311060), (6, 3592550), (10, 2155530), (12, 1796275), (13, 1658100), (15, 1437020), (20, 1077765), (25, 862212), (26, 829050), (30, 718510), (39, 552700), (50, 431106), (52, 414525), (60, 359255), (65, 331620), (75, 287404), (78, 276350), (100, 215553), (130, 165810), (150, 143702), (156, 138175), (195, 110540), (260, 82905), (300, 71851), (325, 66324), (390, 55270), (650, 33162), (780, 27635), (975, 22108), (1300, 16581), (1950, 11054), (3900, 5527)]