779500020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{999359}}^1$

素因数の和:999384

約数の個数: 48

約数和(自身を含む): 2350494720

約数和(自身を除く): 1570994700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 999359, 1998718, 2998077, 3997436, 4996795, 5996154, 9993590, 11992308, 12991667, 14990385, 19987180, 25983334, 29980770, 38975001, 51966668, 59961540, 64958335, 77950002, 129916670, 155900004, 194875005, 259833340, 389750010, 779500020]

約数ペア:

[(1, 779500020), (2, 389750010), (3, 259833340), (4, 194875005), (5, 155900004), (6, 129916670), (10, 77950002), (12, 64958335), (13, 59961540), (15, 51966668), (20, 38975001), (26, 29980770), (30, 25983334), (39, 19987180), (52, 14990385), (60, 12991667), (65, 11992308), (78, 9993590), (130, 5996154), (156, 4996795), (195, 3997436), (260, 2998077), (390, 1998718), (780, 999359)]