23519140

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:352

約数の個数: 48

約数和(自身を含む): 50909040

約数和(自身を除く): 27389900

約数列:

[1, 2, 4, 5, 10, 20, 73, 89, 146, 178, 181, 292, 356, 362, 365, 445, 724, 730, 890, 905, 1460, 1780, 1810, 3620, 6497, 12994, 13213, 16109, 25988, 26426, 32218, 32485, 52852, 64436, 64970, 66065, 80545, 129940, 132130, 161090, 264260, 322180, 1175957, 2351914, 4703828, 5879785, 11759570, 23519140]

約数ペア:

[(1, 23519140), (2, 11759570), (4, 5879785), (5, 4703828), (10, 2351914), (20, 1175957), (73, 322180), (89, 264260), (146, 161090), (178, 132130), (181, 129940), (292, 80545), (356, 66065), (362, 64970), (365, 64436), (445, 52852), (724, 32485), (730, 32218), (890, 26426), (905, 25988), (1460, 16109), (1780, 13213), (1810, 12994), (3620, 6497)]