18821140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{379}}^1$

素因数の和:592

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 24079340

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 191, 260, 379, 382, 758, 764, 955, 1516, 1895, 1910, 2483, 3790, 3820, 4927, 4966, 7580, 9854, 9932, 12415, 19708, 24635, 24830, 49270, 49660, 72389, 98540, 144778, 289556, 361945, 723890, 941057, 1447780, 1882114, 3764228, 4705285, 9410570, 18821140]

約数ペア:

[(1, 18821140), (2, 9410570), (4, 4705285), (5, 3764228), (10, 1882114), (13, 1447780), (20, 941057), (26, 723890), (52, 361945), (65, 289556), (130, 144778), (191, 98540), (260, 72389), (379, 49660), (382, 49270), (758, 24830), (764, 24635), (955, 19708), (1516, 12415), (1895, 9932), (1910, 9854), (2483, 7580), (3790, 4966), (3820, 4927)]