21719628

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{1091}}^1$

素因数の和:1187

約数の個数: 72

約数和(自身を含む): 63598080

約数和(自身を除く): 41878452

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 79, 84, 126, 158, 237, 252, 316, 474, 553, 711, 948, 1091, 1106, 1422, 1659, 2182, 2212, 2844, 3273, 3318, 4364, 4977, 6546, 6636, 7637, 9819, 9954, 13092, 15274, 19638, 19908, 22911, 30548, 39276, 45822, 68733, 86189, 91644, 137466, 172378, 258567, 274932, 344756, 517134, 603323, 775701, 1034268, 1206646, 1551402, 1809969, 2413292, 3102804, 3619938, 5429907, 7239876, 10859814, 21719628]

約数ペア:

[(1, 21719628), (2, 10859814), (3, 7239876), (4, 5429907), (6, 3619938), (7, 3102804), (9, 2413292), (12, 1809969), (14, 1551402), (18, 1206646), (21, 1034268), (28, 775701), (36, 603323), (42, 517134), (63, 344756), (79, 274932), (84, 258567), (126, 172378), (158, 137466), (237, 91644), (252, 86189), (316, 68733), (474, 45822), (553, 39276), (711, 30548), (948, 22911), (1091, 19908), (1106, 19638), (1422, 15274), (1659, 13092), (2182, 9954), (2212, 9819), (2844, 7637), (3273, 6636), (3318, 6546), (4364, 4977)]