15970625

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{101}}^1$

素因数の和:155

約数の個数: 40

約数和(自身を含む): 22942656

約数和(自身を除く): 6972031

約数列:

[1, 5, 11, 23, 25, 55, 101, 115, 125, 253, 275, 505, 575, 625, 1111, 1265, 1375, 2323, 2525, 2875, 5555, 6325, 6875, 11615, 12625, 14375, 25553, 27775, 31625, 58075, 63125, 127765, 138875, 158125, 290375, 638825, 694375, 1451875, 3194125, 15970625]

約数ペア:

[(1, 15970625), (5, 3194125), (11, 1451875), (23, 694375), (25, 638825), (55, 290375), (101, 158125), (115, 138875), (125, 127765), (253, 63125), (275, 58075), (505, 31625), (575, 27775), (625, 25553), (1111, 14375), (1265, 12625), (1375, 11615), (2323, 6875), (2525, 6325), (2875, 5555)]