19854990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{487}}^1$

素因数の和:654

約数の個数: 64

約数和(自身を含む): 53406720

約数和(自身を除く): 33551730

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 151, 270, 302, 453, 487, 755, 906, 974, 1359, 1461, 1510, 2265, 2435, 2718, 2922, 4077, 4383, 4530, 4870, 6795, 7305, 8154, 8766, 13149, 13590, 14610, 20385, 21915, 26298, 40770, 43830, 65745, 73537, 131490, 147074, 220611, 367685, 441222, 661833, 735370, 1103055, 1323666, 1985499, 2206110, 3309165, 3970998, 6618330, 9927495, 19854990]

約数ペア:

[(1, 19854990), (2, 9927495), (3, 6618330), (5, 3970998), (6, 3309165), (9, 2206110), (10, 1985499), (15, 1323666), (18, 1103055), (27, 735370), (30, 661833), (45, 441222), (54, 367685), (90, 220611), (135, 147074), (151, 131490), (270, 73537), (302, 65745), (453, 43830), (487, 40770), (755, 26298), (906, 21915), (974, 20385), (1359, 14610), (1461, 13590), (1510, 13149), (2265, 8766), (2435, 8154), (2718, 7305), (2922, 6795), (4077, 4870), (4383, 4530)]