90805760

素因数分解:

$2^9\times 5^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:551

約数の個数: 80

約数和(自身を含む): 220968000

約数和(自身を除く): 130162240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 79, 80, 128, 158, 160, 256, 316, 320, 395, 449, 512, 632, 640, 790, 898, 1264, 1280, 1580, 1796, 2245, 2528, 2560, 3160, 3592, 4490, 5056, 6320, 7184, 8980, 10112, 12640, 14368, 17960, 20224, 25280, 28736, 35471, 35920, 40448, 50560, 57472, 70942, 71840, 101120, 114944, 141884, 143680, 177355, 202240, 229888, 283768, 287360, 354710, 567536, 574720, 709420, 1135072, 1149440, 1418840, 2270144, 2837680, 4540288, 5675360, 9080576, 11350720, 18161152, 22701440, 45402880, 90805760]

約数ペア:

[(1, 90805760), (2, 45402880), (4, 22701440), (5, 18161152), (8, 11350720), (10, 9080576), (16, 5675360), (20, 4540288), (32, 2837680), (40, 2270144), (64, 1418840), (79, 1149440), (80, 1135072), (128, 709420), (158, 574720), (160, 567536), (256, 354710), (316, 287360), (320, 283768), (395, 229888), (449, 202240), (512, 177355), (632, 143680), (640, 141884), (790, 114944), (898, 101120), (1264, 71840), (1280, 70942), (1580, 57472), (1796, 50560), (2245, 40448), (2528, 35920), (2560, 35471), (3160, 28736), (3592, 25280), (4490, 20224), (5056, 17960), (6320, 14368), (7184, 12640), (8980, 10112)]