239902640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{419}}^1\times {\mathrm{421}}^1$

素因数の和:870

約数の個数: 80

約数和(自身を含む): 593399520

約数和(自身を除く): 353496880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 419, 421, 680, 838, 842, 1360, 1676, 1684, 2095, 2105, 3352, 3368, 4190, 4210, 6704, 6736, 7123, 7157, 8380, 8420, 14246, 14314, 16760, 16840, 28492, 28628, 33520, 33680, 35615, 35785, 56984, 57256, 71230, 71570, 113968, 114512, 142460, 143140, 176399, 284920, 286280, 352798, 569840, 572560, 705596, 881995, 1411192, 1763990, 2822384, 2998783, 3527980, 5997566, 7055960, 11995132, 14111920, 14993915, 23990264, 29987830, 47980528, 59975660, 119951320, 239902640]

約数ペア:

[(1, 239902640), (2, 119951320), (4, 59975660), (5, 47980528), (8, 29987830), (10, 23990264), (16, 14993915), (17, 14111920), (20, 11995132), (34, 7055960), (40, 5997566), (68, 3527980), (80, 2998783), (85, 2822384), (136, 1763990), (170, 1411192), (272, 881995), (340, 705596), (419, 572560), (421, 569840), (680, 352798), (838, 286280), (842, 284920), (1360, 176399), (1676, 143140), (1684, 142460), (2095, 114512), (2105, 113968), (3352, 71570), (3368, 71230), (4190, 57256), (4210, 56984), (6704, 35785), (6736, 35615), (7123, 33680), (7157, 33520), (8380, 28628), (8420, 28492), (14246, 16840), (14314, 16760)]