72892780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{1321}}^1$

素因数の和:1450

約数の個数: 48

約数和(自身を含む): 159909120

約数和(自身を除く): 87016340

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1321, 1780, 2642, 2759, 5284, 5518, 6605, 11036, 13210, 13795, 26420, 27590, 40951, 55180, 81902, 117569, 163804, 204755, 235138, 409510, 470276, 587845, 819020, 1175690, 2351380, 3644639, 7289278, 14578556, 18223195, 36446390, 72892780]

約数ペア:

[(1, 72892780), (2, 36446390), (4, 18223195), (5, 14578556), (10, 7289278), (20, 3644639), (31, 2351380), (62, 1175690), (89, 819020), (124, 587845), (155, 470276), (178, 409510), (310, 235138), (356, 204755), (445, 163804), (620, 117569), (890, 81902), (1321, 55180), (1780, 40951), (2642, 27590), (2759, 26420), (5284, 13795), (5518, 13210), (6605, 11036)]