21986790

素因数分解:

$2^1\times 3^1\times 5^1\times 7^2\times {\mathrm{14957}}^1$

素因数の和:14981

約数の個数: 48

約数和(自身を含む): 61387632

約数和(自身を除く): 39400842

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 49, 70, 98, 105, 147, 210, 245, 294, 490, 735, 1470, 14957, 29914, 44871, 74785, 89742, 104699, 149570, 209398, 224355, 314097, 448710, 523495, 628194, 732893, 1046990, 1465786, 1570485, 2198679, 3140970, 3664465, 4397358, 7328930, 10993395, 21986790]

約数ペア:

[(1, 21986790), (2, 10993395), (3, 7328930), (5, 4397358), (6, 3664465), (7, 3140970), (10, 2198679), (14, 1570485), (15, 1465786), (21, 1046990), (30, 732893), (35, 628194), (42, 523495), (49, 448710), (70, 314097), (98, 224355), (105, 209398), (147, 149570), (210, 104699), (245, 89742), (294, 74785), (490, 44871), (735, 29914), (1470, 14957)]