28880020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{401}}^1$

素因数の和:700

約数の個数: 48

約数和(自身を含む): 65712528

約数和(自身を除く): 36832508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 277, 401, 554, 802, 1108, 1385, 1604, 2005, 2770, 3601, 4010, 5213, 5540, 7202, 8020, 10426, 14404, 18005, 20852, 26065, 36010, 52130, 72020, 104260, 111077, 222154, 444308, 555385, 1110770, 1444001, 2221540, 2888002, 5776004, 7220005, 14440010, 28880020]

約数ペア:

[(1, 28880020), (2, 14440010), (4, 7220005), (5, 5776004), (10, 2888002), (13, 2221540), (20, 1444001), (26, 1110770), (52, 555385), (65, 444308), (130, 222154), (260, 111077), (277, 104260), (401, 72020), (554, 52130), (802, 36010), (1108, 26065), (1385, 20852), (1604, 18005), (2005, 14404), (2770, 10426), (3601, 8020), (4010, 7202), (5213, 5540)]