21678332

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:350

約数の個数: 48

約数和(自身を含む): 43817760

約数和(自身を除く): 22139428

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 68, 137, 179, 221, 274, 358, 442, 548, 716, 884, 1781, 2327, 2329, 3043, 3562, 4654, 4658, 6086, 7124, 9308, 9316, 12172, 24523, 30277, 39559, 49046, 60554, 79118, 98092, 121108, 158236, 318799, 416891, 637598, 833782, 1275196, 1667564, 5419583, 10839166, 21678332]

約数ペア:

[(1, 21678332), (2, 10839166), (4, 5419583), (13, 1667564), (17, 1275196), (26, 833782), (34, 637598), (52, 416891), (68, 318799), (137, 158236), (179, 121108), (221, 98092), (274, 79118), (358, 60554), (442, 49046), (548, 39559), (716, 30277), (884, 24523), (1781, 12172), (2327, 9316), (2329, 9308), (3043, 7124), (3562, 6086), (4654, 4658)]