321501440

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^2$

素因数の和:312

約数の個数: 108

約数和(自身を含む): 835343964

約数和(自身を除く): 513842524

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 139, 160, 208, 256, 260, 278, 320, 416, 520, 556, 640, 695, 832, 1040, 1112, 1280, 1390, 1664, 1807, 2080, 2224, 2780, 3328, 3614, 4160, 4448, 5560, 7228, 8320, 8896, 9035, 11120, 14456, 16640, 17792, 18070, 19321, 22240, 28912, 35584, 36140, 38642, 44480, 57824, 72280, 77284, 88960, 96605, 115648, 144560, 154568, 177920, 193210, 231296, 251173, 289120, 309136, 386420, 462592, 502346, 578240, 618272, 772840, 1004692, 1156480, 1236544, 1255865, 1545680, 2009384, 2312960, 2473088, 2511730, 3091360, 4018768, 4946176, 5023460, 6182720, 8037536, 10046920, 12365440, 16075072, 20093840, 24730880, 32150144, 40187680, 64300288, 80375360, 160750720, 321501440]

約数ペア:

[(1, 321501440), (2, 160750720), (4, 80375360), (5, 64300288), (8, 40187680), (10, 32150144), (13, 24730880), (16, 20093840), (20, 16075072), (26, 12365440), (32, 10046920), (40, 8037536), (52, 6182720), (64, 5023460), (65, 4946176), (80, 4018768), (104, 3091360), (128, 2511730), (130, 2473088), (139, 2312960), (160, 2009384), (208, 1545680), (256, 1255865), (260, 1236544), (278, 1156480), (320, 1004692), (416, 772840), (520, 618272), (556, 578240), (640, 502346), (695, 462592), (832, 386420), (1040, 309136), (1112, 289120), (1280, 251173), (1390, 231296), (1664, 193210), (1807, 177920), (2080, 154568), (2224, 144560), (2780, 115648), (3328, 96605), (3614, 88960), (4160, 77284), (4448, 72280), (5560, 57824), (7228, 44480), (8320, 38642), (8896, 36140), (9035, 35584), (11120, 28912), (14456, 22240), (16640, 19321), (17792, 18070)]