21355490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{2693}}^1$

素因数の和:2774

約数の個数: 32

約数和(自身を含む): 42091056

約数和(自身を除く): 20735566

約数列:

[1, 2, 5, 10, 13, 26, 61, 65, 122, 130, 305, 610, 793, 1586, 2693, 3965, 5386, 7930, 13465, 26930, 35009, 70018, 164273, 175045, 328546, 350090, 821365, 1642730, 2135549, 4271098, 10677745, 21355490]

約数ペア:

[(1, 21355490), (2, 10677745), (5, 4271098), (10, 2135549), (13, 1642730), (26, 821365), (61, 350090), (65, 328546), (122, 175045), (130, 164273), (305, 70018), (610, 35009), (793, 26930), (1586, 13465), (2693, 7930), (3965, 5386)]