399656960

素因数分解:

$2^{11}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1259}}^1$

素因数の和:1317

約数の個数: 96

約数和(自身を含む): 990662400

約数和(自身を除く): 591005440

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, 512, 620, 640, 992, 1024, 1240, 1259, 1280, 1984, 2048, 2480, 2518, 2560, 3968, 4960, 5036, 5120, 6295, 7936, 9920, 10072, 10240, 12590, 15872, 19840, 20144, 25180, 31744, 39029, 39680, 40288, 50360, 63488, 78058, 79360, 80576, 100720, 156116, 158720, 161152, 195145, 201440, 312232, 317440, 322304, 390290, 402880, 624464, 644608, 780580, 805760, 1248928, 1289216, 1561160, 1611520, 2497856, 2578432, 3122320, 3223040, 4995712, 6244640, 6446080, 9991424, 12489280, 12892160, 19982848, 24978560, 39965696, 49957120, 79931392, 99914240, 199828480, 399656960]

約数ペア:

[(1, 399656960), (2, 199828480), (4, 99914240), (5, 79931392), (8, 49957120), (10, 39965696), (16, 24978560), (20, 19982848), (31, 12892160), (32, 12489280), (40, 9991424), (62, 6446080), (64, 6244640), (80, 4995712), (124, 3223040), (128, 3122320), (155, 2578432), (160, 2497856), (248, 1611520), (256, 1561160), (310, 1289216), (320, 1248928), (496, 805760), (512, 780580), (620, 644608), (640, 624464), (992, 402880), (1024, 390290), (1240, 322304), (1259, 317440), (1280, 312232), (1984, 201440), (2048, 195145), (2480, 161152), (2518, 158720), (2560, 156116), (3968, 100720), (4960, 80576), (5036, 79360), (5120, 78058), (6295, 63488), (7936, 50360), (9920, 40288), (10072, 39680), (10240, 39029), (12590, 31744), (15872, 25180), (19840, 20144)]