121265920

素因数分解:

$2^8\times 5^1\times {\mathrm{211}}^1\times {\mathrm{449}}^1$

素因数の和:681

約数の個数: 72

約数和(自身を含む): 292496400

約数和(自身を除く): 171230480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 211, 256, 320, 422, 449, 640, 844, 898, 1055, 1280, 1688, 1796, 2110, 2245, 3376, 3592, 4220, 4490, 6752, 7184, 8440, 8980, 13504, 14368, 16880, 17960, 27008, 28736, 33760, 35920, 54016, 57472, 67520, 71840, 94739, 114944, 135040, 143680, 189478, 270080, 287360, 378956, 473695, 574720, 757912, 947390, 1515824, 1894780, 3031648, 3789560, 6063296, 7579120, 12126592, 15158240, 24253184, 30316480, 60632960, 121265920]

約数ペア:

[(1, 121265920), (2, 60632960), (4, 30316480), (5, 24253184), (8, 15158240), (10, 12126592), (16, 7579120), (20, 6063296), (32, 3789560), (40, 3031648), (64, 1894780), (80, 1515824), (128, 947390), (160, 757912), (211, 574720), (256, 473695), (320, 378956), (422, 287360), (449, 270080), (640, 189478), (844, 143680), (898, 135040), (1055, 114944), (1280, 94739), (1688, 71840), (1796, 67520), (2110, 57472), (2245, 54016), (3376, 35920), (3592, 33760), (4220, 28736), (4490, 27008), (6752, 17960), (7184, 16880), (8440, 14368), (8980, 13504)]