216840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 705600

約数和(自身を除く): 488760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 139, 156, 195, 260, 278, 312, 390, 417, 520, 556, 695, 780, 834, 1112, 1390, 1560, 1668, 1807, 2085, 2780, 3336, 3614, 4170, 5421, 5560, 7228, 8340, 9035, 10842, 14456, 16680, 18070, 21684, 27105, 36140, 43368, 54210, 72280, 108420, 216840]

約数ペア:

[(1, 216840), (2, 108420), (3, 72280), (4, 54210), (5, 43368), (6, 36140), (8, 27105), (10, 21684), (12, 18070), (13, 16680), (15, 14456), (20, 10842), (24, 9035), (26, 8340), (30, 7228), (39, 5560), (40, 5421), (52, 4170), (60, 3614), (65, 3336), (78, 2780), (104, 2085), (120, 1807), (130, 1668), (139, 1560), (156, 1390), (195, 1112), (260, 834), (278, 780), (312, 695), (390, 556), (417, 520)]