640437712

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{51383}}^1$

素因数の和:51451

約数の個数: 40

約数和(自身を含む): 1338039360

約数和(自身を除く): 697601648

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 82, 152, 164, 304, 328, 656, 779, 1558, 3116, 6232, 12464, 51383, 102766, 205532, 411064, 822128, 976277, 1952554, 2106703, 3905108, 4213406, 7810216, 8426812, 15620432, 16853624, 33707248, 40027357, 80054714, 160109428, 320218856, 640437712]

約数ペア:

[(1, 640437712), (2, 320218856), (4, 160109428), (8, 80054714), (16, 40027357), (19, 33707248), (38, 16853624), (41, 15620432), (76, 8426812), (82, 7810216), (152, 4213406), (164, 3905108), (304, 2106703), (328, 1952554), (656, 976277), (779, 822128), (1558, 411064), (3116, 205532), (6232, 102766), (12464, 51383)]