21700360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{331}}^1$

素因数の和:502

約数の個数: 64

約数和(自身を含む): 53784000

約数和(自身を除く): 32083640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 149, 220, 298, 331, 440, 596, 662, 745, 1192, 1324, 1490, 1639, 1655, 2648, 2980, 3278, 3310, 3641, 5960, 6556, 6620, 7282, 8195, 13112, 13240, 14564, 16390, 18205, 29128, 32780, 36410, 49319, 65560, 72820, 98638, 145640, 197276, 246595, 394552, 493190, 542509, 986380, 1085018, 1972760, 2170036, 2712545, 4340072, 5425090, 10850180, 21700360]

約数ペア:

[(1, 21700360), (2, 10850180), (4, 5425090), (5, 4340072), (8, 2712545), (10, 2170036), (11, 1972760), (20, 1085018), (22, 986380), (40, 542509), (44, 493190), (55, 394552), (88, 246595), (110, 197276), (149, 145640), (220, 98638), (298, 72820), (331, 65560), (440, 49319), (596, 36410), (662, 32780), (745, 29128), (1192, 18205), (1324, 16390), (1490, 14564), (1639, 13240), (1655, 13112), (2648, 8195), (2980, 7282), (3278, 6620), (3310, 6556), (3641, 5960)]