21283515

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:145

約数の個数: 96

約数和(自身を含む): 44328960

約数和(自身を除く): 23045445

約数列:

[1, 3, 5, 9, 11, 15, 19, 31, 33, 45, 55, 57, 73, 93, 95, 99, 155, 165, 171, 209, 219, 279, 285, 341, 365, 465, 495, 589, 627, 657, 803, 855, 1023, 1045, 1095, 1387, 1395, 1705, 1767, 1881, 2263, 2409, 2945, 3069, 3135, 3285, 4015, 4161, 5115, 5301, 6479, 6789, 6935, 7227, 8835, 9405, 11315, 12045, 12483, 15257, 15345, 19437, 20367, 20805, 24893, 26505, 32395, 33945, 36135, 42997, 45771, 58311, 62415, 74679, 76285, 97185, 101835, 124465, 128991, 137313, 214985, 224037, 228855, 291555, 373395, 386973, 472967, 644955, 686565, 1120185, 1418901, 1934865, 2364835, 4256703, 7094505, 21283515]

約数ペア:

[(1, 21283515), (3, 7094505), (5, 4256703), (9, 2364835), (11, 1934865), (15, 1418901), (19, 1120185), (31, 686565), (33, 644955), (45, 472967), (55, 386973), (57, 373395), (73, 291555), (93, 228855), (95, 224037), (99, 214985), (155, 137313), (165, 128991), (171, 124465), (209, 101835), (219, 97185), (279, 76285), (285, 74679), (341, 62415), (365, 58311), (465, 45771), (495, 42997), (589, 36135), (627, 33945), (657, 32395), (803, 26505), (855, 24893), (1023, 20805), (1045, 20367), (1095, 19437), (1387, 15345), (1395, 15257), (1705, 12483), (1767, 12045), (1881, 11315), (2263, 9405), (2409, 8835), (2945, 7227), (3069, 6935), (3135, 6789), (3285, 6479), (4015, 5301), (4161, 5115)]