21088116

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1249}}^1$

素因数の和:1333

約数の個数: 72

約数和(自身を含む): 61880000

約数和(自身を除く): 40791884

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 67, 84, 126, 134, 201, 252, 268, 402, 469, 603, 804, 938, 1206, 1249, 1407, 1876, 2412, 2498, 2814, 3747, 4221, 4996, 5628, 7494, 8442, 8743, 11241, 14988, 16884, 17486, 22482, 26229, 34972, 44964, 52458, 78687, 83683, 104916, 157374, 167366, 251049, 314748, 334732, 502098, 585781, 753147, 1004196, 1171562, 1506294, 1757343, 2343124, 3012588, 3514686, 5272029, 7029372, 10544058, 21088116]

約数ペア:

[(1, 21088116), (2, 10544058), (3, 7029372), (4, 5272029), (6, 3514686), (7, 3012588), (9, 2343124), (12, 1757343), (14, 1506294), (18, 1171562), (21, 1004196), (28, 753147), (36, 585781), (42, 502098), (63, 334732), (67, 314748), (84, 251049), (126, 167366), (134, 157374), (201, 104916), (252, 83683), (268, 78687), (402, 52458), (469, 44964), (603, 34972), (804, 26229), (938, 22482), (1206, 17486), (1249, 16884), (1407, 14988), (1876, 11241), (2412, 8743), (2498, 8442), (2814, 7494), (3747, 5628), (4221, 4996)]