221478556

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 72

約数和(自身を含む): 440315568

約数和(自身を除く): 218837012

約数列:

[1, 2, 4, 13, 26, 41, 52, 61, 82, 122, 131, 164, 169, 244, 262, 338, 524, 533, 676, 793, 1066, 1586, 1703, 2132, 2501, 3172, 3406, 5002, 5371, 6812, 6929, 7991, 10004, 10309, 10742, 13858, 15982, 20618, 21484, 22139, 27716, 31964, 32513, 41236, 44278, 65026, 69823, 88556, 103883, 130052, 139646, 207766, 279292, 327631, 415532, 422669, 655262, 845338, 907699, 1310524, 1350479, 1690676, 1815398, 2700958, 3630796, 4259203, 5401916, 8518406, 17036812, 55369639, 110739278, 221478556]

約数ペア:

[(1, 221478556), (2, 110739278), (4, 55369639), (13, 17036812), (26, 8518406), (41, 5401916), (52, 4259203), (61, 3630796), (82, 2700958), (122, 1815398), (131, 1690676), (164, 1350479), (169, 1310524), (244, 907699), (262, 845338), (338, 655262), (524, 422669), (533, 415532), (676, 327631), (793, 279292), (1066, 207766), (1586, 139646), (1703, 130052), (2132, 103883), (2501, 88556), (3172, 69823), (3406, 65026), (5002, 44278), (5371, 41236), (6812, 32513), (6929, 31964), (7991, 27716), (10004, 22139), (10309, 21484), (10742, 20618), (13858, 15982)]