21985132

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{239}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 43747200

約数和(自身を除く): 21762068

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 61, 116, 122, 239, 244, 377, 478, 754, 793, 956, 1508, 1586, 1769, 3107, 3172, 3538, 6214, 6931, 7076, 12428, 13862, 14579, 22997, 27724, 29158, 45994, 58316, 90103, 91988, 180206, 189527, 360412, 379054, 422791, 758108, 845582, 1691164, 5496283, 10992566, 21985132]

約数ペア:

[(1, 21985132), (2, 10992566), (4, 5496283), (13, 1691164), (26, 845582), (29, 758108), (52, 422791), (58, 379054), (61, 360412), (116, 189527), (122, 180206), (239, 91988), (244, 90103), (377, 58316), (478, 45994), (754, 29158), (793, 27724), (956, 22997), (1508, 14579), (1586, 13862), (1769, 12428), (3107, 7076), (3172, 6931), (3538, 6214)]