20720214

素因数分解:

$2^1\times 3^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:633

約数の個数: 48

約数和(自身を含む): 47084544

約数和(自身を除く): 26364330

約数列:

[1, 2, 3, 6, 9, 18, 31, 62, 71, 93, 142, 186, 213, 279, 426, 523, 558, 639, 1046, 1278, 1569, 2201, 3138, 4402, 4707, 6603, 9414, 13206, 16213, 19809, 32426, 37133, 39618, 48639, 74266, 97278, 111399, 145917, 222798, 291834, 334197, 668394, 1151123, 2302246, 3453369, 6906738, 10360107, 20720214]

約数ペア:

[(1, 20720214), (2, 10360107), (3, 6906738), (6, 3453369), (9, 2302246), (18, 1151123), (31, 668394), (62, 334197), (71, 291834), (93, 222798), (142, 145917), (186, 111399), (213, 97278), (279, 74266), (426, 48639), (523, 39618), (558, 37133), (639, 32426), (1046, 19809), (1278, 16213), (1569, 13206), (2201, 9414), (3138, 6603), (4402, 4707)]