71220020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{313}}^1\times {\mathrm{367}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 155301888

約数和(自身を除く): 84081868

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 313, 367, 620, 626, 734, 1252, 1468, 1565, 1835, 3130, 3670, 6260, 7340, 9703, 11377, 19406, 22754, 38812, 45508, 48515, 56885, 97030, 113770, 114871, 194060, 227540, 229742, 459484, 574355, 1148710, 2297420, 3561001, 7122002, 14244004, 17805005, 35610010, 71220020]

約数ペア:

[(1, 71220020), (2, 35610010), (4, 17805005), (5, 14244004), (10, 7122002), (20, 3561001), (31, 2297420), (62, 1148710), (124, 574355), (155, 459484), (310, 229742), (313, 227540), (367, 194060), (620, 114871), (626, 113770), (734, 97030), (1252, 56885), (1468, 48515), (1565, 45508), (1835, 38812), (3130, 22754), (3670, 19406), (6260, 11377), (7340, 9703)]