8163920

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:204

約数の個数: 80

約数和(自身を含む): 20623680

約数和(自身を除く): 12459760

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 131, 152, 164, 190, 205, 262, 304, 328, 380, 410, 524, 655, 656, 760, 779, 820, 1048, 1310, 1520, 1558, 1640, 2096, 2489, 2620, 3116, 3280, 3895, 4978, 5240, 5371, 6232, 7790, 9956, 10480, 10742, 12445, 12464, 15580, 19912, 21484, 24890, 26855, 31160, 39824, 42968, 49780, 53710, 62320, 85936, 99560, 102049, 107420, 199120, 204098, 214840, 408196, 429680, 510245, 816392, 1020490, 1632784, 2040980, 4081960, 8163920]

約数ペア:

[(1, 8163920), (2, 4081960), (4, 2040980), (5, 1632784), (8, 1020490), (10, 816392), (16, 510245), (19, 429680), (20, 408196), (38, 214840), (40, 204098), (41, 199120), (76, 107420), (80, 102049), (82, 99560), (95, 85936), (131, 62320), (152, 53710), (164, 49780), (190, 42968), (205, 39824), (262, 31160), (304, 26855), (328, 24890), (380, 21484), (410, 19912), (524, 15580), (655, 12464), (656, 12445), (760, 10742), (779, 10480), (820, 9956), (1048, 7790), (1310, 6232), (1520, 5371), (1558, 5240), (1640, 4978), (2096, 3895), (2489, 3280), (2620, 3116)]