155902720

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3929}}^1$

素因数の和:3981

約数の個数: 72

約数和(自身を含む): 385580160

約数和(自身を除く): 229677440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 620, 640, 992, 1240, 1280, 1984, 2480, 3929, 3968, 4960, 7858, 7936, 9920, 15716, 19645, 19840, 31432, 39290, 39680, 62864, 78580, 121799, 125728, 157160, 243598, 251456, 314320, 487196, 502912, 608995, 628640, 974392, 1005824, 1217990, 1257280, 1948784, 2435980, 2514560, 3897568, 4871960, 5029120, 7795136, 9743920, 15590272, 19487840, 31180544, 38975680, 77951360, 155902720]

約数ペア:

[(1, 155902720), (2, 77951360), (4, 38975680), (5, 31180544), (8, 19487840), (10, 15590272), (16, 9743920), (20, 7795136), (31, 5029120), (32, 4871960), (40, 3897568), (62, 2514560), (64, 2435980), (80, 1948784), (124, 1257280), (128, 1217990), (155, 1005824), (160, 974392), (248, 628640), (256, 608995), (310, 502912), (320, 487196), (496, 314320), (620, 251456), (640, 243598), (992, 157160), (1240, 125728), (1280, 121799), (1984, 78580), (2480, 62864), (3929, 39680), (3968, 39290), (4960, 31432), (7858, 19840), (7936, 19645), (9920, 15716)]