128224720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{887}}^1$

素因数の和:1052

約数の個数: 80

約数和(自身を含む): 323729280

約数和(自身を除く): 195504560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 139, 208, 260, 278, 520, 556, 695, 887, 1040, 1112, 1390, 1774, 1807, 2224, 2780, 3548, 3614, 4435, 5560, 7096, 7228, 8870, 9035, 11120, 11531, 14192, 14456, 17740, 18070, 23062, 28912, 35480, 36140, 46124, 57655, 70960, 72280, 92248, 115310, 123293, 144560, 184496, 230620, 246586, 461240, 493172, 616465, 922480, 986344, 1232930, 1602809, 1972688, 2465860, 3205618, 4931720, 6411236, 8014045, 9863440, 12822472, 16028090, 25644944, 32056180, 64112360, 128224720]

約数ペア:

[(1, 128224720), (2, 64112360), (4, 32056180), (5, 25644944), (8, 16028090), (10, 12822472), (13, 9863440), (16, 8014045), (20, 6411236), (26, 4931720), (40, 3205618), (52, 2465860), (65, 1972688), (80, 1602809), (104, 1232930), (130, 986344), (139, 922480), (208, 616465), (260, 493172), (278, 461240), (520, 246586), (556, 230620), (695, 184496), (887, 144560), (1040, 123293), (1112, 115310), (1390, 92248), (1774, 72280), (1807, 70960), (2224, 57655), (2780, 46124), (3548, 36140), (3614, 35480), (4435, 28912), (5560, 23062), (7096, 18070), (7228, 17740), (8870, 14456), (9035, 14192), (11120, 11531)]