720861440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43321}}^1$

素因数の和:43355

約数の個数: 72

約数和(自身を含む): 1859553528

約数和(自身を除く): 1138692088

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 208, 256, 260, 320, 416, 520, 640, 832, 1040, 1280, 1664, 2080, 3328, 4160, 8320, 16640, 43321, 86642, 173284, 216605, 346568, 433210, 563173, 693136, 866420, 1126346, 1386272, 1732840, 2252692, 2772544, 2815865, 3465680, 4505384, 5545088, 5631730, 6931360, 9010768, 11090176, 11263460, 13862720, 18021536, 22526920, 27725440, 36043072, 45053840, 55450880, 72086144, 90107680, 144172288, 180215360, 360430720, 720861440]

約数ペア:

[(1, 720861440), (2, 360430720), (4, 180215360), (5, 144172288), (8, 90107680), (10, 72086144), (13, 55450880), (16, 45053840), (20, 36043072), (26, 27725440), (32, 22526920), (40, 18021536), (52, 13862720), (64, 11263460), (65, 11090176), (80, 9010768), (104, 6931360), (128, 5631730), (130, 5545088), (160, 4505384), (208, 3465680), (256, 2815865), (260, 2772544), (320, 2252692), (416, 1732840), (520, 1386272), (640, 1126346), (832, 866420), (1040, 693136), (1280, 563173), (1664, 433210), (2080, 346568), (3328, 216605), (4160, 173284), (8320, 86642), (16640, 43321)]