80870140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{5099}}^1$

素因数の和:5182

約数の個数: 48

約数和(自身を含む): 185925600

約数和(自身を除く): 105055460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 61, 65, 122, 130, 244, 260, 305, 610, 793, 1220, 1586, 3172, 3965, 5099, 7930, 10198, 15860, 20396, 25495, 50990, 66287, 101980, 132574, 265148, 311039, 331435, 622078, 662870, 1244156, 1325740, 1555195, 3110390, 4043507, 6220780, 8087014, 16174028, 20217535, 40435070, 80870140]

約数ペア:

[(1, 80870140), (2, 40435070), (4, 20217535), (5, 16174028), (10, 8087014), (13, 6220780), (20, 4043507), (26, 3110390), (52, 1555195), (61, 1325740), (65, 1244156), (122, 662870), (130, 622078), (244, 331435), (260, 311039), (305, 265148), (610, 132574), (793, 101980), (1220, 66287), (1586, 50990), (3172, 25495), (3965, 20396), (5099, 15860), (7930, 10198)]