19879935

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{1987}}^1$

素因数の和:2047

約数の個数: 32

約数和(自身を含む): 34352640

約数和(自身を除く): 14472705

約数列:

[1, 3, 5, 15, 23, 29, 69, 87, 115, 145, 345, 435, 667, 1987, 2001, 3335, 5961, 9935, 10005, 29805, 45701, 57623, 137103, 172869, 228505, 288115, 685515, 864345, 1325329, 3975987, 6626645, 19879935]

約数ペア:

[(1, 19879935), (3, 6626645), (5, 3975987), (15, 1325329), (23, 864345), (29, 685515), (69, 288115), (87, 228505), (115, 172869), (145, 137103), (345, 57623), (435, 45701), (667, 29805), (1987, 10005), (2001, 9935), (3335, 5961)]