1557990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{2473}}^1$

素因数の和:2493

約数の個数: 48

約数和(自身を含む): 4631328

約数和(自身を除く): 3073338

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 2473, 4946, 7419, 12365, 14838, 17311, 22257, 24730, 34622, 37095, 44514, 51933, 74190, 86555, 103866, 111285, 155799, 173110, 222570, 259665, 311598, 519330, 778995, 1557990]

約数ペア:

[(1, 1557990), (2, 778995), (3, 519330), (5, 311598), (6, 259665), (7, 222570), (9, 173110), (10, 155799), (14, 111285), (15, 103866), (18, 86555), (21, 74190), (30, 51933), (35, 44514), (42, 37095), (45, 34622), (63, 24730), (70, 22257), (90, 17311), (105, 14838), (126, 12365), (210, 7419), (315, 4946), (630, 2473)]