15904520

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1231}}^1$

素因数の和:1278

約数の個数: 64

約数和(自身を含む): 39916800

約数和(自身を除く): 24012280

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1231, 1292, 1615, 2462, 2584, 3230, 4924, 6155, 6460, 9848, 12310, 12920, 20927, 23389, 24620, 41854, 46778, 49240, 83708, 93556, 104635, 116945, 167416, 187112, 209270, 233890, 397613, 418540, 467780, 795226, 837080, 935560, 1590452, 1988065, 3180904, 3976130, 7952260, 15904520]

約数ペア:

[(1, 15904520), (2, 7952260), (4, 3976130), (5, 3180904), (8, 1988065), (10, 1590452), (17, 935560), (19, 837080), (20, 795226), (34, 467780), (38, 418540), (40, 397613), (68, 233890), (76, 209270), (85, 187112), (95, 167416), (136, 116945), (152, 104635), (170, 93556), (190, 83708), (323, 49240), (340, 46778), (380, 41854), (646, 24620), (680, 23389), (760, 20927), (1231, 12920), (1292, 12310), (1615, 9848), (2462, 6460), (2584, 6155), (3230, 4924)]