208790820

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{165707}}^1$

素因数の和:165729

約数の個数: 72

約数和(自身を含む): 723812544

約数和(自身を除く): 515021724

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 165707, 331414, 497121, 662828, 828535, 994242, 1159949, 1491363, 1657070, 1988484, 2319898, 2485605, 2982726, 3314140, 3479847, 4639796, 4971210, 5799745, 5965452, 6959694, 7456815, 9942420, 10439541, 11599490, 13919388, 14913630, 17399235, 20879082, 23198980, 29827260, 34798470, 41758164, 52197705, 69596940, 104395410, 208790820]

約数ペア:

[(1, 208790820), (2, 104395410), (3, 69596940), (4, 52197705), (5, 41758164), (6, 34798470), (7, 29827260), (9, 23198980), (10, 20879082), (12, 17399235), (14, 14913630), (15, 13919388), (18, 11599490), (20, 10439541), (21, 9942420), (28, 7456815), (30, 6959694), (35, 5965452), (36, 5799745), (42, 4971210), (45, 4639796), (60, 3479847), (63, 3314140), (70, 2982726), (84, 2485605), (90, 2319898), (105, 1988484), (126, 1657070), (140, 1491363), (180, 1159949), (210, 994242), (252, 828535), (315, 662828), (420, 497121), (630, 331414), (1260, 165707)]