18468970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:235

約数の個数: 64

約数和(自身を含む): 38810016

約数和(自身を除く): 20341046

約数列:

[1, 2, 5, 10, 13, 17, 26, 34, 61, 65, 85, 122, 130, 137, 170, 221, 274, 305, 442, 610, 685, 793, 1037, 1105, 1370, 1586, 1781, 2074, 2210, 2329, 3562, 3965, 4658, 5185, 7930, 8357, 8905, 10370, 11645, 13481, 16714, 17810, 23290, 26962, 30277, 41785, 60554, 67405, 83570, 108641, 134810, 142069, 151385, 217282, 284138, 302770, 543205, 710345, 1086410, 1420690, 1846897, 3693794, 9234485, 18468970]

約数ペア:

[(1, 18468970), (2, 9234485), (5, 3693794), (10, 1846897), (13, 1420690), (17, 1086410), (26, 710345), (34, 543205), (61, 302770), (65, 284138), (85, 217282), (122, 151385), (130, 142069), (137, 134810), (170, 108641), (221, 83570), (274, 67405), (305, 60554), (442, 41785), (610, 30277), (685, 26962), (793, 23290), (1037, 17810), (1105, 16714), (1370, 13481), (1586, 11645), (1781, 10370), (2074, 8905), (2210, 8357), (2329, 7930), (3562, 5185), (3965, 4658)]