21019130

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:239

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 23304070

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 89, 95, 110, 113, 178, 190, 209, 226, 418, 445, 565, 890, 979, 1045, 1130, 1243, 1691, 1958, 2090, 2147, 2486, 3382, 4294, 4895, 6215, 8455, 9790, 10057, 10735, 12430, 16910, 18601, 20114, 21470, 23617, 37202, 47234, 50285, 93005, 100570, 110627, 118085, 186010, 191083, 221254, 236170, 382166, 553135, 955415, 1106270, 1910830, 2101913, 4203826, 10509565, 21019130]

約数ペア:

[(1, 21019130), (2, 10509565), (5, 4203826), (10, 2101913), (11, 1910830), (19, 1106270), (22, 955415), (38, 553135), (55, 382166), (89, 236170), (95, 221254), (110, 191083), (113, 186010), (178, 118085), (190, 110627), (209, 100570), (226, 93005), (418, 50285), (445, 47234), (565, 37202), (890, 23617), (979, 21470), (1045, 20114), (1130, 18601), (1243, 16910), (1691, 12430), (1958, 10735), (2090, 10057), (2147, 9790), (2486, 8455), (3382, 6215), (4294, 4895)]