21482920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1229}}^1$

素因数の和:1282

約数の個数: 64

約数和(自身を含む): 53136000

約数和(自身を除く): 31653080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 92, 95, 115, 152, 184, 190, 230, 380, 437, 460, 760, 874, 920, 1229, 1748, 2185, 2458, 3496, 4370, 4916, 6145, 8740, 9832, 12290, 17480, 23351, 24580, 28267, 46702, 49160, 56534, 93404, 113068, 116755, 141335, 186808, 226136, 233510, 282670, 467020, 537073, 565340, 934040, 1074146, 1130680, 2148292, 2685365, 4296584, 5370730, 10741460, 21482920]

約数ペア:

[(1, 21482920), (2, 10741460), (4, 5370730), (5, 4296584), (8, 2685365), (10, 2148292), (19, 1130680), (20, 1074146), (23, 934040), (38, 565340), (40, 537073), (46, 467020), (76, 282670), (92, 233510), (95, 226136), (115, 186808), (152, 141335), (184, 116755), (190, 113068), (230, 93404), (380, 56534), (437, 49160), (460, 46702), (760, 28267), (874, 24580), (920, 23351), (1229, 17480), (1748, 12290), (2185, 9832), (2458, 8740), (3496, 6145), (4370, 4916)]