21864040

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 128

約数和(自身を含む): 59097600

約数和(自身を除く): 37233560

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 37, 40, 44, 55, 68, 74, 79, 85, 88, 110, 136, 148, 158, 170, 185, 187, 220, 296, 316, 340, 370, 374, 395, 407, 440, 629, 632, 680, 740, 748, 790, 814, 869, 935, 1258, 1343, 1480, 1496, 1580, 1628, 1738, 1870, 2035, 2516, 2686, 2923, 3145, 3160, 3256, 3476, 3740, 4070, 4345, 5032, 5372, 5846, 6290, 6715, 6919, 6952, 7480, 8140, 8690, 10744, 11692, 12580, 13430, 13838, 14615, 14773, 16280, 17380, 23384, 25160, 26860, 27676, 29230, 29546, 32153, 34595, 34760, 49691, 53720, 55352, 58460, 59092, 64306, 69190, 73865, 99382, 116920, 118184, 128612, 138380, 147730, 160765, 198764, 248455, 257224, 276760, 295460, 321530, 397528, 496910, 546601, 590920, 643060, 993820, 1093202, 1286120, 1987640, 2186404, 2733005, 4372808, 5466010, 10932020, 21864040]

約数ペア:

[(1, 21864040), (2, 10932020), (4, 5466010), (5, 4372808), (8, 2733005), (10, 2186404), (11, 1987640), (17, 1286120), (20, 1093202), (22, 993820), (34, 643060), (37, 590920), (40, 546601), (44, 496910), (55, 397528), (68, 321530), (74, 295460), (79, 276760), (85, 257224), (88, 248455), (110, 198764), (136, 160765), (148, 147730), (158, 138380), (170, 128612), (185, 118184), (187, 116920), (220, 99382), (296, 73865), (316, 69190), (340, 64306), (370, 59092), (374, 58460), (395, 55352), (407, 53720), (440, 49691), (629, 34760), (632, 34595), (680, 32153), (740, 29546), (748, 29230), (790, 27676), (814, 26860), (869, 25160), (935, 23384), (1258, 17380), (1343, 16280), (1480, 14773), (1496, 14615), (1580, 13838), (1628, 13430), (1738, 12580), (1870, 11692), (2035, 10744), (2516, 8690), (2686, 8140), (2923, 7480), (3145, 6952), (3160, 6919), (3256, 6715), (3476, 6290), (3740, 5846), (4070, 5372), (4345, 5032)]