28453360

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{251}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 72182880

約数和(自身を除く): 43729520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 109, 130, 208, 218, 251, 260, 436, 502, 520, 545, 872, 1004, 1040, 1090, 1255, 1417, 1744, 2008, 2180, 2510, 2834, 3263, 4016, 4360, 5020, 5668, 6526, 7085, 8720, 10040, 11336, 13052, 14170, 16315, 20080, 22672, 26104, 27359, 28340, 32630, 52208, 54718, 56680, 65260, 109436, 113360, 130520, 136795, 218872, 261040, 273590, 355667, 437744, 547180, 711334, 1094360, 1422668, 1778335, 2188720, 2845336, 3556670, 5690672, 7113340, 14226680, 28453360]

約数ペア:

[(1, 28453360), (2, 14226680), (4, 7113340), (5, 5690672), (8, 3556670), (10, 2845336), (13, 2188720), (16, 1778335), (20, 1422668), (26, 1094360), (40, 711334), (52, 547180), (65, 437744), (80, 355667), (104, 273590), (109, 261040), (130, 218872), (208, 136795), (218, 130520), (251, 113360), (260, 109436), (436, 65260), (502, 56680), (520, 54718), (545, 52208), (872, 32630), (1004, 28340), (1040, 27359), (1090, 26104), (1255, 22672), (1417, 20080), (1744, 16315), (2008, 14170), (2180, 13052), (2510, 11336), (2834, 10040), (3263, 8720), (4016, 7085), (4360, 6526), (5020, 5668)]