21088380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{2683}}^1$

素因数の和:2826

約数の個数: 48

約数和(自身を含む): 59520384

約数和(自身を除く): 38432004

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 131, 262, 393, 524, 655, 786, 1310, 1572, 1965, 2620, 2683, 3930, 5366, 7860, 8049, 10732, 13415, 16098, 26830, 32196, 40245, 53660, 80490, 160980, 351473, 702946, 1054419, 1405892, 1757365, 2108838, 3514730, 4217676, 5272095, 7029460, 10544190, 21088380]

約数ペア:

[(1, 21088380), (2, 10544190), (3, 7029460), (4, 5272095), (5, 4217676), (6, 3514730), (10, 2108838), (12, 1757365), (15, 1405892), (20, 1054419), (30, 702946), (60, 351473), (131, 160980), (262, 80490), (393, 53660), (524, 40245), (655, 32196), (786, 26830), (1310, 16098), (1572, 13415), (1965, 10732), (2620, 8049), (2683, 7860), (3930, 5366)]