161718785

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:761

約数の個数: 32

約数和(自身を含む): 213580800

約数和(自身を除く): 51862015

約数列:

[1, 5, 19, 31, 89, 95, 155, 445, 589, 617, 1691, 2759, 2945, 3085, 8455, 11723, 13795, 19127, 52421, 54913, 58615, 95635, 262105, 274565, 363413, 1043347, 1702303, 1817065, 5216735, 8511515, 32343757, 161718785]

約数ペア:

[(1, 161718785), (5, 32343757), (19, 8511515), (31, 5216735), (89, 1817065), (95, 1702303), (155, 1043347), (445, 363413), (589, 274565), (617, 262105), (1691, 95635), (2759, 58615), (2945, 54913), (3085, 52421), (8455, 19127), (11723, 13795)]