71265280

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{449}}^1$

素因数の和:505

約数の個数: 88

約数和(自身を含む): 176860800

約数和(自身を除く): 105595520

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, 449, 496, 512, 620, 640, 898, 992, 1024, 1240, 1280, 1796, 1984, 2245, 2480, 2560, 3592, 3968, 4490, 4960, 5120, 7184, 7936, 8980, 9920, 13919, 14368, 15872, 17960, 19840, 27838, 28736, 31744, 35920, 39680, 55676, 57472, 69595, 71840, 79360, 111352, 114944, 139190, 143680, 158720, 222704, 229888, 278380, 287360, 445408, 459776, 556760, 574720, 890816, 1113520, 1149440, 1781632, 2227040, 2298880, 3563264, 4454080, 7126528, 8908160, 14253056, 17816320, 35632640, 71265280]

約数ペア:

[(1, 71265280), (2, 35632640), (4, 17816320), (5, 14253056), (8, 8908160), (10, 7126528), (16, 4454080), (20, 3563264), (31, 2298880), (32, 2227040), (40, 1781632), (62, 1149440), (64, 1113520), (80, 890816), (124, 574720), (128, 556760), (155, 459776), (160, 445408), (248, 287360), (256, 278380), (310, 229888), (320, 222704), (449, 158720), (496, 143680), (512, 139190), (620, 114944), (640, 111352), (898, 79360), (992, 71840), (1024, 69595), (1240, 57472), (1280, 55676), (1796, 39680), (1984, 35920), (2245, 31744), (2480, 28736), (2560, 27838), (3592, 19840), (3968, 17960), (4490, 15872), (4960, 14368), (5120, 13919), (7184, 9920), (7936, 8980)]