21377355

素因数分解:

$3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:403

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 13873845

約数列:

[1, 3, 5, 15, 67, 89, 201, 239, 267, 335, 445, 717, 1005, 1195, 1335, 3585, 5963, 16013, 17889, 21271, 29815, 48039, 63813, 80065, 89445, 106355, 240195, 319065, 1425157, 4275471, 7125785, 21377355]

約数ペア:

[(1, 21377355), (3, 7125785), (5, 4275471), (15, 1425157), (67, 319065), (89, 240195), (201, 106355), (239, 89445), (267, 80065), (335, 63813), (445, 48039), (717, 29815), (1005, 21271), (1195, 17889), (1335, 16013), (3585, 5963)]