19500020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{691}}^1$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 43944768

約数和(自身を除く): 24444748

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 83, 85, 166, 170, 332, 340, 415, 691, 830, 1382, 1411, 1660, 2764, 2822, 3455, 5644, 6910, 7055, 11747, 13820, 14110, 23494, 28220, 46988, 57353, 58735, 114706, 117470, 229412, 234940, 286765, 573530, 975001, 1147060, 1950002, 3900004, 4875005, 9750010, 19500020]

約数ペア:

[(1, 19500020), (2, 9750010), (4, 4875005), (5, 3900004), (10, 1950002), (17, 1147060), (20, 975001), (34, 573530), (68, 286765), (83, 234940), (85, 229412), (166, 117470), (170, 114706), (332, 58735), (340, 57353), (415, 46988), (691, 28220), (830, 23494), (1382, 14110), (1411, 13820), (1660, 11747), (2764, 7055), (2822, 6910), (3455, 5644)]