201991040

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{10181}}^1$

素因数の和:10231

約数の個数: 64

約数和(自身を含む): 498510720

約数和(自身を除く): 296519680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 992, 1240, 1984, 2480, 3968, 4960, 9920, 10181, 19840, 20362, 40724, 50905, 81448, 101810, 162896, 203620, 315611, 325792, 407240, 631222, 651584, 814480, 1262444, 1303168, 1578055, 1628960, 2524888, 3156110, 3257920, 5049776, 6312220, 6515840, 10099552, 12624440, 20199104, 25248880, 40398208, 50497760, 100995520, 201991040]

約数ペア:

[(1, 201991040), (2, 100995520), (4, 50497760), (5, 40398208), (8, 25248880), (10, 20199104), (16, 12624440), (20, 10099552), (31, 6515840), (32, 6312220), (40, 5049776), (62, 3257920), (64, 3156110), (80, 2524888), (124, 1628960), (128, 1578055), (155, 1303168), (160, 1262444), (248, 814480), (310, 651584), (320, 631222), (496, 407240), (620, 325792), (640, 315611), (992, 203620), (1240, 162896), (1984, 101810), (2480, 81448), (3968, 50905), (4960, 40724), (9920, 20362), (10181, 19840)]