21381150

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{2909}}^1$

素因数の和:2938

約数の個数: 72

約数和(自身を含む): 61703640

約数和(自身を除く): 40322490

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 49, 50, 70, 75, 98, 105, 147, 150, 175, 210, 245, 294, 350, 490, 525, 735, 1050, 1225, 1470, 2450, 2909, 3675, 5818, 7350, 8727, 14545, 17454, 20363, 29090, 40726, 43635, 61089, 72725, 87270, 101815, 122178, 142541, 145450, 203630, 218175, 285082, 305445, 427623, 436350, 509075, 610890, 712705, 855246, 1018150, 1425410, 1527225, 2138115, 3054450, 3563525, 4276230, 7127050, 10690575, 21381150]

約数ペア:

[(1, 21381150), (2, 10690575), (3, 7127050), (5, 4276230), (6, 3563525), (7, 3054450), (10, 2138115), (14, 1527225), (15, 1425410), (21, 1018150), (25, 855246), (30, 712705), (35, 610890), (42, 509075), (49, 436350), (50, 427623), (70, 305445), (75, 285082), (98, 218175), (105, 203630), (147, 145450), (150, 142541), (175, 122178), (210, 101815), (245, 87270), (294, 72725), (350, 61089), (490, 43635), (525, 40726), (735, 29090), (1050, 20363), (1225, 17454), (1470, 14545), (2450, 8727), (2909, 7350), (3675, 5818)]