81937280

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^2\times {\mathrm{443}}^1$

素因数の和:496

約数の個数: 96

約数和(自身を含む): 208551240

約数和(自身を除く): 126613960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 289, 320, 340, 443, 544, 578, 640, 680, 886, 1088, 1156, 1360, 1445, 1772, 2176, 2215, 2312, 2720, 2890, 3544, 4430, 4624, 5440, 5780, 7088, 7531, 8860, 9248, 10880, 11560, 14176, 15062, 17720, 18496, 23120, 28352, 30124, 35440, 36992, 37655, 46240, 56704, 60248, 70880, 75310, 92480, 120496, 128027, 141760, 150620, 184960, 240992, 256054, 283520, 301240, 481984, 512108, 602480, 640135, 963968, 1024216, 1204960, 1280270, 2048432, 2409920, 2560540, 4096864, 4819840, 5121080, 8193728, 10242160, 16387456, 20484320, 40968640, 81937280]

約数ペア:

[(1, 81937280), (2, 40968640), (4, 20484320), (5, 16387456), (8, 10242160), (10, 8193728), (16, 5121080), (17, 4819840), (20, 4096864), (32, 2560540), (34, 2409920), (40, 2048432), (64, 1280270), (68, 1204960), (80, 1024216), (85, 963968), (128, 640135), (136, 602480), (160, 512108), (170, 481984), (272, 301240), (289, 283520), (320, 256054), (340, 240992), (443, 184960), (544, 150620), (578, 141760), (640, 128027), (680, 120496), (886, 92480), (1088, 75310), (1156, 70880), (1360, 60248), (1445, 56704), (1772, 46240), (2176, 37655), (2215, 36992), (2312, 35440), (2720, 30124), (2890, 28352), (3544, 23120), (4430, 18496), (4624, 17720), (5440, 15062), (5780, 14176), (7088, 11560), (7531, 10880), (8860, 9248)]