253630420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^2\times {\mathrm{1601}}^1$

素因数の和:1788

約数の個数: 36

約数和(自身を含む): 539012124

約数和(自身を除く): 285381704

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1601, 1780, 3202, 6404, 7921, 8005, 15842, 16010, 31684, 32020, 39605, 79210, 142489, 158420, 284978, 569956, 712445, 1424890, 2849780, 12681521, 25363042, 50726084, 63407605, 126815210, 253630420]

約数ペア:

[(1, 253630420), (2, 126815210), (4, 63407605), (5, 50726084), (10, 25363042), (20, 12681521), (89, 2849780), (178, 1424890), (356, 712445), (445, 569956), (890, 284978), (1601, 158420), (1780, 142489), (3202, 79210), (6404, 39605), (7921, 32020), (8005, 31684), (15842, 16010)]