31884680

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:294

約数の個数: 64

約数和(自身を含む): 74131200

約数和(自身を除く): 42246520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 103, 109, 142, 206, 218, 284, 355, 412, 436, 515, 545, 568, 710, 824, 872, 1030, 1090, 1420, 2060, 2180, 2840, 4120, 4360, 7313, 7739, 11227, 14626, 15478, 22454, 29252, 30956, 36565, 38695, 44908, 56135, 58504, 61912, 73130, 77390, 89816, 112270, 146260, 154780, 224540, 292520, 309560, 449080, 797117, 1594234, 3188468, 3985585, 6376936, 7971170, 15942340, 31884680]

約数ペア:

[(1, 31884680), (2, 15942340), (4, 7971170), (5, 6376936), (8, 3985585), (10, 3188468), (20, 1594234), (40, 797117), (71, 449080), (103, 309560), (109, 292520), (142, 224540), (206, 154780), (218, 146260), (284, 112270), (355, 89816), (412, 77390), (436, 73130), (515, 61912), (545, 58504), (568, 56135), (710, 44908), (824, 38695), (872, 36565), (1030, 30956), (1090, 29252), (1420, 22454), (2060, 15478), (2180, 14626), (2840, 11227), (4120, 7739), (4360, 7313)]