128217740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{3169}}^1$

素因数の和:3219

約数の個数: 72

約数和(自身を含む): 326991840

約数和(自身を除く): 198774100

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 476, 578, 595, 1156, 1190, 1445, 2023, 2380, 2890, 3169, 4046, 5780, 6338, 8092, 10115, 12676, 15845, 20230, 22183, 31690, 40460, 44366, 53873, 63380, 88732, 107746, 110915, 215492, 221830, 269365, 377111, 443660, 538730, 754222, 915841, 1077460, 1508444, 1831682, 1885555, 3663364, 3771110, 4579205, 6410887, 7542220, 9158410, 12821774, 18316820, 25643548, 32054435, 64108870, 128217740]

約数ペア:

[(1, 128217740), (2, 64108870), (4, 32054435), (5, 25643548), (7, 18316820), (10, 12821774), (14, 9158410), (17, 7542220), (20, 6410887), (28, 4579205), (34, 3771110), (35, 3663364), (68, 1885555), (70, 1831682), (85, 1508444), (119, 1077460), (140, 915841), (170, 754222), (238, 538730), (289, 443660), (340, 377111), (476, 269365), (578, 221830), (595, 215492), (1156, 110915), (1190, 107746), (1445, 88732), (2023, 63380), (2380, 53873), (2890, 44366), (3169, 40460), (4046, 31690), (5780, 22183), (6338, 20230), (8092, 15845), (10115, 12676)]