161720245

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 208373760

約数和(自身を除く): 46653515

約数列:

[1, 5, 23, 67, 115, 139, 151, 335, 695, 755, 1541, 3197, 3473, 7705, 9313, 10117, 15985, 17365, 20989, 46565, 50585, 104945, 214199, 232691, 482747, 1070995, 1163455, 1406263, 2413735, 7031315, 32344049, 161720245]

約数ペア:

[(1, 161720245), (5, 32344049), (23, 7031315), (67, 2413735), (115, 1406263), (139, 1163455), (151, 1070995), (335, 482747), (695, 232691), (755, 214199), (1541, 104945), (3197, 50585), (3473, 46565), (7705, 20989), (9313, 17365), (10117, 15985)]