221293345

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:626

約数の個数: 64

約数和(自身を含む): 349655040

約数和(自身を除く): 128361695

約数列:

[1, 5, 7, 13, 29, 31, 35, 65, 91, 145, 155, 203, 217, 377, 403, 455, 541, 899, 1015, 1085, 1885, 2015, 2639, 2705, 2821, 3787, 4495, 6293, 7033, 11687, 13195, 14105, 15689, 16771, 18935, 31465, 35165, 49231, 58435, 78445, 81809, 83855, 109823, 117397, 203957, 218023, 246155, 409045, 486359, 549115, 586985, 1019785, 1090115, 1427699, 1526161, 2431795, 3404513, 6322667, 7138495, 7630805, 17022565, 31613335, 44258669, 221293345]

約数ペア:

[(1, 221293345), (5, 44258669), (7, 31613335), (13, 17022565), (29, 7630805), (31, 7138495), (35, 6322667), (65, 3404513), (91, 2431795), (145, 1526161), (155, 1427699), (203, 1090115), (217, 1019785), (377, 586985), (403, 549115), (455, 486359), (541, 409045), (899, 246155), (1015, 218023), (1085, 203957), (1885, 117397), (2015, 109823), (2639, 83855), (2705, 81809), (2821, 78445), (3787, 58435), (4495, 49231), (6293, 35165), (7033, 31465), (11687, 18935), (13195, 16771), (14105, 15689)]