21509284

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 41827968

約数和(自身を除く): 20318684

約数列:

[1, 2, 4, 17, 34, 37, 68, 74, 83, 103, 148, 166, 206, 332, 412, 629, 1258, 1411, 1751, 2516, 2822, 3071, 3502, 3811, 5644, 6142, 7004, 7622, 8549, 12284, 15244, 17098, 34196, 52207, 64787, 104414, 129574, 145333, 208828, 259148, 290666, 316313, 581332, 632626, 1265252, 5377321, 10754642, 21509284]

約数ペア:

[(1, 21509284), (2, 10754642), (4, 5377321), (17, 1265252), (34, 632626), (37, 581332), (68, 316313), (74, 290666), (83, 259148), (103, 208828), (148, 145333), (166, 129574), (206, 104414), (332, 64787), (412, 52207), (629, 34196), (1258, 17098), (1411, 15244), (1751, 12284), (2516, 8549), (2822, 7622), (3071, 7004), (3502, 6142), (3811, 5644)]