21353570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:267

約数の個数: 64

約数和(自身を含む): 46414080

約数和(自身を除く): 25060510

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 67, 70, 134, 145, 157, 203, 290, 314, 335, 406, 469, 670, 785, 938, 1015, 1099, 1570, 1943, 2030, 2198, 2345, 3886, 4553, 4690, 5495, 9106, 9715, 10519, 10990, 13601, 19430, 21038, 22765, 27202, 31871, 45530, 52595, 63742, 68005, 73633, 105190, 136010, 147266, 159355, 305051, 318710, 368165, 610102, 736330, 1525255, 2135357, 3050510, 4270714, 10676785, 21353570]

約数ペア:

[(1, 21353570), (2, 10676785), (5, 4270714), (7, 3050510), (10, 2135357), (14, 1525255), (29, 736330), (35, 610102), (58, 368165), (67, 318710), (70, 305051), (134, 159355), (145, 147266), (157, 136010), (203, 105190), (290, 73633), (314, 68005), (335, 63742), (406, 52595), (469, 45530), (670, 31871), (785, 27202), (938, 22765), (1015, 21038), (1099, 19430), (1570, 13601), (1943, 10990), (2030, 10519), (2198, 9715), (2345, 9106), (3886, 5495), (4553, 4690)]