21901460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2143}}^1$

素因数の和:2232

約数の個数: 48

約数和(自身を含む): 53308416

約数和(自身を除く): 31406956

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 73, 140, 146, 292, 365, 511, 730, 1022, 1460, 2044, 2143, 2555, 4286, 5110, 8572, 10220, 10715, 15001, 21430, 30002, 42860, 60004, 75005, 150010, 156439, 300020, 312878, 625756, 782195, 1095073, 1564390, 2190146, 3128780, 4380292, 5475365, 10950730, 21901460]

約数ペア:

[(1, 21901460), (2, 10950730), (4, 5475365), (5, 4380292), (7, 3128780), (10, 2190146), (14, 1564390), (20, 1095073), (28, 782195), (35, 625756), (70, 312878), (73, 300020), (140, 156439), (146, 150010), (292, 75005), (365, 60004), (511, 42860), (730, 30002), (1022, 21430), (1460, 15001), (2044, 10715), (2143, 10220), (2555, 8572), (4286, 5110)]