521300

素因数分解:

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

素因数の和:428

約数の個数: 36

約数和(自身を含む): 1221276

約数和(自身を除く): 699976

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 401, 650, 802, 1300, 1604, 2005, 4010, 5213, 8020, 10025, 10426, 20050, 20852, 26065, 40100, 52130, 104260, 130325, 260650, 521300]

約数ペア:

[(1, 521300), (2, 260650), (4, 130325), (5, 104260), (10, 52130), (13, 40100), (20, 26065), (25, 20852), (26, 20050), (50, 10426), (52, 10025), (65, 8020), (100, 5213), (130, 4010), (260, 2005), (325, 1604), (401, 1300), (650, 802)]