20889450

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{61}}^1\times {\mathrm{761}}^1$

素因数の和:840

約数の個数: 72

約数和(自身を含む): 57117996

約数和(自身を除く): 36228546

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 61, 75, 90, 122, 150, 183, 225, 305, 366, 450, 549, 610, 761, 915, 1098, 1522, 1525, 1830, 2283, 2745, 3050, 3805, 4566, 4575, 5490, 6849, 7610, 9150, 11415, 13698, 13725, 19025, 22830, 27450, 34245, 38050, 46421, 57075, 68490, 92842, 114150, 139263, 171225, 232105, 278526, 342450, 417789, 464210, 696315, 835578, 1160525, 1392630, 2088945, 2321050, 3481575, 4177890, 6963150, 10444725, 20889450]

約数ペア:

[(1, 20889450), (2, 10444725), (3, 6963150), (5, 4177890), (6, 3481575), (9, 2321050), (10, 2088945), (15, 1392630), (18, 1160525), (25, 835578), (30, 696315), (45, 464210), (50, 417789), (61, 342450), (75, 278526), (90, 232105), (122, 171225), (150, 139263), (183, 114150), (225, 92842), (305, 68490), (366, 57075), (450, 46421), (549, 38050), (610, 34245), (761, 27450), (915, 22830), (1098, 19025), (1522, 13725), (1525, 13698), (1830, 11415), (2283, 9150), (2745, 7610), (3050, 6849), (3805, 5490), (4566, 4575)]