18939320

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^2\times {\mathrm{563}}^1$

素因数の和:632

約数の個数: 48

約数和(自身を含む): 44211960

約数和(自身を除く): 25272640

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 145, 232, 290, 563, 580, 841, 1126, 1160, 1682, 2252, 2815, 3364, 4205, 4504, 5630, 6728, 8410, 11260, 16327, 16820, 22520, 32654, 33640, 65308, 81635, 130616, 163270, 326540, 473483, 653080, 946966, 1893932, 2367415, 3787864, 4734830, 9469660, 18939320]

約数ペア:

[(1, 18939320), (2, 9469660), (4, 4734830), (5, 3787864), (8, 2367415), (10, 1893932), (20, 946966), (29, 653080), (40, 473483), (58, 326540), (116, 163270), (145, 130616), (232, 81635), (290, 65308), (563, 33640), (580, 32654), (841, 22520), (1126, 16820), (1160, 16327), (1682, 11260), (2252, 8410), (2815, 6728), (3364, 5630), (4205, 4504)]