19690740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:941

約数の個数: 72

約数和(自身を含む): 60234720

約数和(自身を除く): 40543980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 139, 180, 278, 417, 556, 695, 787, 834, 1251, 1390, 1574, 1668, 2085, 2361, 2502, 2780, 3148, 3935, 4170, 4722, 5004, 6255, 7083, 7870, 8340, 9444, 11805, 12510, 14166, 15740, 23610, 25020, 28332, 35415, 47220, 70830, 109393, 141660, 218786, 328179, 437572, 546965, 656358, 984537, 1093930, 1312716, 1640895, 1969074, 2187860, 3281790, 3938148, 4922685, 6563580, 9845370, 19690740]

約数ペア:

[(1, 19690740), (2, 9845370), (3, 6563580), (4, 4922685), (5, 3938148), (6, 3281790), (9, 2187860), (10, 1969074), (12, 1640895), (15, 1312716), (18, 1093930), (20, 984537), (30, 656358), (36, 546965), (45, 437572), (60, 328179), (90, 218786), (139, 141660), (180, 109393), (278, 70830), (417, 47220), (556, 35415), (695, 28332), (787, 25020), (834, 23610), (1251, 15740), (1390, 14166), (1574, 12510), (1668, 11805), (2085, 9444), (2361, 8340), (2502, 7870), (2780, 7083), (3148, 6255), (3935, 5004), (4170, 4722)]