8128805120

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{204859}}^1$

素因数の和:204911

約数の個数: 72

約数和(自身を含む): 20099224320

約数和(自身を除く): 11970419200

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, 3968, 4960, 7936, 9920, 19840, 39680, 204859, 409718, 819436, 1024295, 1638872, 2048590, 3277744, 4097180, 6350629, 6555488, 8194360, 12701258, 13110976, 16388720, 25402516, 26221952, 31753145, 32777440, 50805032, 52443904, 63506290, 65554880, 101610064, 127012580, 131109760, 203220128, 254025160, 262219520, 406440256, 508050320, 812880512, 1016100640, 1625761024, 2032201280, 4064402560, 8128805120]

約数ペア:

[(1, 8128805120), (2, 4064402560), (4, 2032201280), (5, 1625761024), (8, 1016100640), (10, 812880512), (16, 508050320), (20, 406440256), (31, 262219520), (32, 254025160), (40, 203220128), (62, 131109760), (64, 127012580), (80, 101610064), (124, 65554880), (128, 63506290), (155, 52443904), (160, 50805032), (248, 32777440), (256, 31753145), (310, 26221952), (320, 25402516), (496, 16388720), (620, 13110976), (640, 12701258), (992, 8194360), (1240, 6555488), (1280, 6350629), (1984, 4097180), (2480, 3277744), (3968, 2048590), (4960, 1638872), (7936, 1024295), (9920, 819436), (19840, 409718), (39680, 204859)]