21100920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1741}}^1$

素因数の和:1856

約数の個数: 64

約数和(自身を含む): 63966240

約数和(自身を除く): 42865320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 101, 120, 202, 303, 404, 505, 606, 808, 1010, 1212, 1515, 1741, 2020, 2424, 3030, 3482, 4040, 5223, 6060, 6964, 8705, 10446, 12120, 13928, 17410, 20892, 26115, 34820, 41784, 52230, 69640, 104460, 175841, 208920, 351682, 527523, 703364, 879205, 1055046, 1406728, 1758410, 2110092, 2637615, 3516820, 4220184, 5275230, 7033640, 10550460, 21100920]

約数ペア:

[(1, 21100920), (2, 10550460), (3, 7033640), (4, 5275230), (5, 4220184), (6, 3516820), (8, 2637615), (10, 2110092), (12, 1758410), (15, 1406728), (20, 1055046), (24, 879205), (30, 703364), (40, 527523), (60, 351682), (101, 208920), (120, 175841), (202, 104460), (303, 69640), (404, 52230), (505, 41784), (606, 34820), (808, 26115), (1010, 20892), (1212, 17410), (1515, 13928), (1741, 12120), (2020, 10446), (2424, 8705), (3030, 6964), (3482, 6060), (4040, 5223)]