17655625

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:127

約数の個数: 40

約数和(自身を含む): 24798312

約数和(自身を除く): 7142687

約数列:

[1, 5, 13, 25, 41, 53, 65, 125, 205, 265, 325, 533, 625, 689, 1025, 1325, 1625, 2173, 2665, 3445, 5125, 6625, 8125, 10865, 13325, 17225, 25625, 28249, 33125, 54325, 66625, 86125, 141245, 271625, 333125, 430625, 706225, 1358125, 3531125, 17655625]

約数ペア:

[(1, 17655625), (5, 3531125), (13, 1358125), (25, 706225), (41, 430625), (53, 333125), (65, 271625), (125, 141245), (205, 86125), (265, 66625), (325, 54325), (533, 33125), (625, 28249), (689, 25625), (1025, 17225), (1325, 13325), (1625, 10865), (2173, 8125), (2665, 6625), (3445, 5125)]