1640763980

素因数分解:

$2^2\times 5^1\times {\mathrm{1847}}^1\times {\mathrm{44417}}^1$

素因数の和:46273

約数の個数: 24

約数和(自身を含む): 3447547488

約数和(自身を除く): 1806783508

約数列:

[1, 2, 4, 5, 10, 20, 1847, 3694, 7388, 9235, 18470, 36940, 44417, 88834, 177668, 222085, 444170, 888340, 82038199, 164076398, 328152796, 410190995, 820381990, 1640763980]

約数ペア:

[(1, 1640763980), (2, 820381990), (4, 410190995), (5, 328152796), (10, 164076398), (20, 82038199), (1847, 888340), (3694, 444170), (7388, 222085), (9235, 177668), (18470, 88834), (36940, 44417)]