2128880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 80

約数和(自身を含む): 5624640

約数和(自身を除く): 3495760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 89, 92, 104, 115, 130, 178, 184, 208, 230, 260, 299, 356, 368, 445, 460, 520, 598, 712, 890, 920, 1040, 1157, 1196, 1424, 1495, 1780, 1840, 2047, 2314, 2392, 2990, 3560, 4094, 4628, 4784, 5785, 5980, 7120, 8188, 9256, 10235, 11570, 11960, 16376, 18512, 20470, 23140, 23920, 26611, 32752, 40940, 46280, 53222, 81880, 92560, 106444, 133055, 163760, 212888, 266110, 425776, 532220, 1064440, 2128880]

約数ペア:

[(1, 2128880), (2, 1064440), (4, 532220), (5, 425776), (8, 266110), (10, 212888), (13, 163760), (16, 133055), (20, 106444), (23, 92560), (26, 81880), (40, 53222), (46, 46280), (52, 40940), (65, 32752), (80, 26611), (89, 23920), (92, 23140), (104, 20470), (115, 18512), (130, 16376), (178, 11960), (184, 11570), (208, 10235), (230, 9256), (260, 8188), (299, 7120), (356, 5980), (368, 5785), (445, 4784), (460, 4628), (520, 4094), (598, 3560), (712, 2990), (890, 2392), (920, 2314), (1040, 2047), (1157, 1840), (1196, 1780), (1424, 1495)]