25518740

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1609}}^1$

素因数の和:1692

約数の個数: 48

約数和(自身を含む): 58694160

約数和(自身を除く): 33175420

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 1609, 3172, 3218, 3965, 6436, 7930, 8045, 15860, 16090, 20917, 32180, 41834, 83668, 98149, 104585, 196298, 209170, 392596, 418340, 490745, 981490, 1275937, 1962980, 2551874, 5103748, 6379685, 12759370, 25518740]

約数ペア:

[(1, 25518740), (2, 12759370), (4, 6379685), (5, 5103748), (10, 2551874), (13, 1962980), (20, 1275937), (26, 981490), (52, 490745), (61, 418340), (65, 392596), (122, 209170), (130, 196298), (244, 104585), (260, 98149), (305, 83668), (610, 41834), (793, 32180), (1220, 20917), (1586, 16090), (1609, 15860), (3172, 8045), (3218, 7930), (3965, 6436)]