21055386

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{251}}^1$

素因数の和:339

約数の個数: 64

約数和(自身を含む): 48771072

約数和(自身を除く): 27715686

約数列:

[1, 2, 3, 6, 11, 22, 31, 33, 41, 62, 66, 82, 93, 123, 186, 246, 251, 341, 451, 502, 682, 753, 902, 1023, 1271, 1353, 1506, 2046, 2542, 2706, 2761, 3813, 5522, 7626, 7781, 8283, 10291, 13981, 15562, 16566, 20582, 23343, 27962, 30873, 41943, 46686, 61746, 83886, 85591, 113201, 171182, 226402, 256773, 319021, 339603, 513546, 638042, 679206, 957063, 1914126, 3509231, 7018462, 10527693, 21055386]

約数ペア:

[(1, 21055386), (2, 10527693), (3, 7018462), (6, 3509231), (11, 1914126), (22, 957063), (31, 679206), (33, 638042), (41, 513546), (62, 339603), (66, 319021), (82, 256773), (93, 226402), (123, 171182), (186, 113201), (246, 85591), (251, 83886), (341, 61746), (451, 46686), (502, 41943), (682, 30873), (753, 27962), (902, 23343), (1023, 20582), (1271, 16566), (1353, 15562), (1506, 13981), (2046, 10291), (2542, 8283), (2706, 7781), (2761, 7626), (3813, 5522)]