20903740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7309}}^1$

素因数の和:7342

約数の個数: 48

約数和(自身を含む): 51579360

約数和(自身を除く): 30675620

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7309, 14618, 29236, 36545, 73090, 80399, 95017, 146180, 160798, 190034, 321596, 380068, 401995, 475085, 803990, 950170, 1045187, 1607980, 1900340, 2090374, 4180748, 5225935, 10451870, 20903740]

約数ペア:

[(1, 20903740), (2, 10451870), (4, 5225935), (5, 4180748), (10, 2090374), (11, 1900340), (13, 1607980), (20, 1045187), (22, 950170), (26, 803990), (44, 475085), (52, 401995), (55, 380068), (65, 321596), (110, 190034), (130, 160798), (143, 146180), (220, 95017), (260, 80399), (286, 73090), (572, 36545), (715, 29236), (1430, 14618), (2860, 7309)]