28808260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{619}}^1$

素因数の和:820

約数の個数: 48

約数和(自身を含む): 65620800

約数和(自身を除く): 36812540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 179, 260, 358, 619, 716, 895, 1238, 1790, 2327, 2476, 3095, 3580, 4654, 6190, 8047, 9308, 11635, 12380, 16094, 23270, 32188, 40235, 46540, 80470, 110801, 160940, 221602, 443204, 554005, 1108010, 1440413, 2216020, 2880826, 5761652, 7202065, 14404130, 28808260]

約数ペア:

[(1, 28808260), (2, 14404130), (4, 7202065), (5, 5761652), (10, 2880826), (13, 2216020), (20, 1440413), (26, 1108010), (52, 554005), (65, 443204), (130, 221602), (179, 160940), (260, 110801), (358, 80470), (619, 46540), (716, 40235), (895, 32188), (1238, 23270), (1790, 16094), (2327, 12380), (2476, 11635), (3095, 9308), (3580, 8047), (4654, 6190)]