65406640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1031}}^1$

素因数の和:1118

約数の個数: 80

約数和(自身を含む): 166614336

約数和(自身を除く): 101207696

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 61, 65, 80, 104, 122, 130, 208, 244, 260, 305, 488, 520, 610, 793, 976, 1031, 1040, 1220, 1586, 2062, 2440, 3172, 3965, 4124, 4880, 5155, 6344, 7930, 8248, 10310, 12688, 13403, 15860, 16496, 20620, 26806, 31720, 41240, 53612, 62891, 63440, 67015, 82480, 107224, 125782, 134030, 214448, 251564, 268060, 314455, 503128, 536120, 628910, 817583, 1006256, 1072240, 1257820, 1635166, 2515640, 3270332, 4087915, 5031280, 6540664, 8175830, 13081328, 16351660, 32703320, 65406640]

約数ペア:

[(1, 65406640), (2, 32703320), (4, 16351660), (5, 13081328), (8, 8175830), (10, 6540664), (13, 5031280), (16, 4087915), (20, 3270332), (26, 2515640), (40, 1635166), (52, 1257820), (61, 1072240), (65, 1006256), (80, 817583), (104, 628910), (122, 536120), (130, 503128), (208, 314455), (244, 268060), (260, 251564), (305, 214448), (488, 134030), (520, 125782), (610, 107224), (793, 82480), (976, 67015), (1031, 63440), (1040, 62891), (1220, 53612), (1586, 41240), (2062, 31720), (2440, 26806), (3172, 20620), (3965, 16496), (4124, 15860), (4880, 13403), (5155, 12688), (6344, 10310), (7930, 8248)]