1638840

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{1951}}^1$

素因数の和:1972

約数の個数: 64

約数和(自身を含む): 5621760

約数和(自身を除く): 3982920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 1951, 3902, 5853, 7804, 9755, 11706, 13657, 15608, 19510, 23412, 27314, 29265, 39020, 40971, 46824, 54628, 58530, 68285, 78040, 81942, 109256, 117060, 136570, 163884, 204855, 234120, 273140, 327768, 409710, 546280, 819420, 1638840]

約数ペア:

[(1, 1638840), (2, 819420), (3, 546280), (4, 409710), (5, 327768), (6, 273140), (7, 234120), (8, 204855), (10, 163884), (12, 136570), (14, 117060), (15, 109256), (20, 81942), (21, 78040), (24, 68285), (28, 58530), (30, 54628), (35, 46824), (40, 40971), (42, 39020), (56, 29265), (60, 27314), (70, 23412), (84, 19510), (105, 15608), (120, 13657), (140, 11706), (168, 9755), (210, 7804), (280, 5853), (420, 3902), (840, 1951)]