20377011920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{651439}}^1$

素因数の和:651492

約数の個数: 80

約数和(自身を含む): 52344506880

約数和(自身を除く): 31967494960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 23, 34, 40, 46, 68, 80, 85, 92, 115, 136, 170, 184, 230, 272, 340, 368, 391, 460, 680, 782, 920, 1360, 1564, 1840, 1955, 3128, 3910, 6256, 7820, 15640, 31280, 651439, 1302878, 2605756, 3257195, 5211512, 6514390, 10423024, 11074463, 13028780, 14983097, 22148926, 26057560, 29966194, 44297852, 52115120, 55372315, 59932388, 74915485, 88595704, 110744630, 119864776, 149830970, 177191408, 221489260, 239729552, 254712649, 299661940, 442978520, 509425298, 599323880, 885957040, 1018850596, 1198647760, 1273563245, 2037701192, 2547126490, 4075402384, 5094252980, 10188505960, 20377011920]

約数ペア:

[(1, 20377011920), (2, 10188505960), (4, 5094252980), (5, 4075402384), (8, 2547126490), (10, 2037701192), (16, 1273563245), (17, 1198647760), (20, 1018850596), (23, 885957040), (34, 599323880), (40, 509425298), (46, 442978520), (68, 299661940), (80, 254712649), (85, 239729552), (92, 221489260), (115, 177191408), (136, 149830970), (170, 119864776), (184, 110744630), (230, 88595704), (272, 74915485), (340, 59932388), (368, 55372315), (391, 52115120), (460, 44297852), (680, 29966194), (782, 26057560), (920, 22148926), (1360, 14983097), (1564, 13028780), (1840, 11074463), (1955, 10423024), (3128, 6514390), (3910, 5211512), (6256, 3257195), (7820, 2605756), (15640, 1302878), (31280, 651439)]