64698880

素因数分解:

$2^9\times 5^1\times {\mathrm{127}}^1\times {\mathrm{199}}^1$

素因数の和:349

約数の個数: 80

約数和(自身を含む): 157132800

約数和(自身を除く): 92433920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 199, 254, 256, 320, 398, 508, 512, 635, 640, 796, 995, 1016, 1270, 1280, 1592, 1990, 2032, 2540, 2560, 3184, 3980, 4064, 5080, 6368, 7960, 8128, 10160, 12736, 15920, 16256, 20320, 25273, 25472, 31840, 32512, 40640, 50546, 50944, 63680, 65024, 81280, 101092, 101888, 126365, 127360, 162560, 202184, 252730, 254720, 325120, 404368, 505460, 509440, 808736, 1010920, 1617472, 2021840, 3234944, 4043680, 6469888, 8087360, 12939776, 16174720, 32349440, 64698880]

約数ペア:

[(1, 64698880), (2, 32349440), (4, 16174720), (5, 12939776), (8, 8087360), (10, 6469888), (16, 4043680), (20, 3234944), (32, 2021840), (40, 1617472), (64, 1010920), (80, 808736), (127, 509440), (128, 505460), (160, 404368), (199, 325120), (254, 254720), (256, 252730), (320, 202184), (398, 162560), (508, 127360), (512, 126365), (635, 101888), (640, 101092), (796, 81280), (995, 65024), (1016, 63680), (1270, 50944), (1280, 50546), (1592, 40640), (1990, 32512), (2032, 31840), (2540, 25472), (2560, 25273), (3184, 20320), (3980, 16256), (4064, 15920), (5080, 12736), (6368, 10160), (7960, 8128)]