12961990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4013}}^1$

素因数の和:4056

約数の個数: 32

約数和(自身を含む): 26010720

約数和(自身を除く): 13048730

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 85, 95, 170, 190, 323, 646, 1615, 3230, 4013, 8026, 20065, 40130, 68221, 76247, 136442, 152494, 341105, 381235, 682210, 762470, 1296199, 2592398, 6480995, 12961990]

約数ペア:

[(1, 12961990), (2, 6480995), (5, 2592398), (10, 1296199), (17, 762470), (19, 682210), (34, 381235), (38, 341105), (85, 152494), (95, 136442), (170, 76247), (190, 68221), (323, 40130), (646, 20065), (1615, 8026), (3230, 4013)]