777787520

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{199}}^1$

素因数の和:446

約数の個数: 128

約数和(自身を含む): 1938816000

約数和(自身を除く): 1161028480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 197, 199, 248, 310, 320, 394, 398, 496, 620, 640, 788, 796, 985, 992, 995, 1240, 1576, 1592, 1970, 1984, 1990, 2480, 3152, 3184, 3940, 3968, 3980, 4960, 6107, 6169, 6304, 6368, 7880, 7960, 9920, 12214, 12338, 12608, 12736, 15760, 15920, 19840, 24428, 24676, 25216, 25472, 30535, 30845, 31520, 31840, 39203, 48856, 49352, 61070, 61690, 63040, 63680, 78406, 97712, 98704, 122140, 123380, 126080, 127360, 156812, 195424, 196015, 197408, 244280, 246760, 313624, 390848, 392030, 394816, 488560, 493520, 627248, 781696, 784060, 789632, 977120, 987040, 1215293, 1254496, 1568120, 1954240, 1974080, 2430586, 2508992, 3136240, 3908480, 3948160, 4861172, 5017984, 6076465, 6272480, 9722344, 12152930, 12544960, 19444688, 24305860, 25089920, 38889376, 48611720, 77778752, 97223440, 155557504, 194446880, 388893760, 777787520]

約数ペア:

[(1, 777787520), (2, 388893760), (4, 194446880), (5, 155557504), (8, 97223440), (10, 77778752), (16, 48611720), (20, 38889376), (31, 25089920), (32, 24305860), (40, 19444688), (62, 12544960), (64, 12152930), (80, 9722344), (124, 6272480), (128, 6076465), (155, 5017984), (160, 4861172), (197, 3948160), (199, 3908480), (248, 3136240), (310, 2508992), (320, 2430586), (394, 1974080), (398, 1954240), (496, 1568120), (620, 1254496), (640, 1215293), (788, 987040), (796, 977120), (985, 789632), (992, 784060), (995, 781696), (1240, 627248), (1576, 493520), (1592, 488560), (1970, 394816), (1984, 392030), (1990, 390848), (2480, 313624), (3152, 246760), (3184, 244280), (3940, 197408), (3968, 196015), (3980, 195424), (4960, 156812), (6107, 127360), (6169, 126080), (6304, 123380), (6368, 122140), (7880, 98704), (7960, 97712), (9920, 78406), (12214, 63680), (12338, 63040), (12608, 61690), (12736, 61070), (15760, 49352), (15920, 48856), (19840, 39203), (24428, 31840), (24676, 31520), (25216, 30845), (25472, 30535)]