21312642

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:307

約数の個数: 64

約数和(自身を含む): 49230720

約数和(自身を除く): 27918078

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 73, 78, 114, 146, 197, 219, 247, 394, 438, 494, 591, 741, 949, 1182, 1387, 1482, 1898, 2561, 2774, 2847, 3743, 4161, 5122, 5694, 7486, 7683, 8322, 11229, 14381, 15366, 18031, 22458, 28762, 36062, 43143, 48659, 54093, 86286, 97318, 108186, 145977, 186953, 273239, 291954, 373906, 546478, 560859, 819717, 1121718, 1639434, 3552107, 7104214, 10656321, 21312642]

約数ペア:

[(1, 21312642), (2, 10656321), (3, 7104214), (6, 3552107), (13, 1639434), (19, 1121718), (26, 819717), (38, 560859), (39, 546478), (57, 373906), (73, 291954), (78, 273239), (114, 186953), (146, 145977), (197, 108186), (219, 97318), (247, 86286), (394, 54093), (438, 48659), (494, 43143), (591, 36062), (741, 28762), (949, 22458), (1182, 18031), (1387, 15366), (1482, 14381), (1898, 11229), (2561, 8322), (2774, 7683), (2847, 7486), (3743, 5694), (4161, 5122)]