21840880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14369}}^1$

素因数の和:14401

約数の個数: 40

約数和(自身を含む): 53456400

約数和(自身を除く): 31615520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14369, 28738, 57476, 71845, 114952, 143690, 229904, 273011, 287380, 546022, 574760, 1092044, 1149520, 1365055, 2184088, 2730110, 4368176, 5460220, 10920440, 21840880]

約数ペア:

[(1, 21840880), (2, 10920440), (4, 5460220), (5, 4368176), (8, 2730110), (10, 2184088), (16, 1365055), (19, 1149520), (20, 1092044), (38, 574760), (40, 546022), (76, 287380), (80, 273011), (95, 229904), (152, 143690), (190, 114952), (304, 71845), (380, 57476), (760, 28738), (1520, 14369)]