21617230

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:684

約数の個数: 32

約数和(自身を含む): 40538880

約数和(自身を除く): 18921650

約数列:

[1, 2, 5, 10, 31, 62, 137, 155, 274, 310, 509, 685, 1018, 1370, 2545, 4247, 5090, 8494, 15779, 21235, 31558, 42470, 69733, 78895, 139466, 157790, 348665, 697330, 2161723, 4323446, 10808615, 21617230]

約数ペア:

[(1, 21617230), (2, 10808615), (5, 4323446), (10, 2161723), (31, 697330), (62, 348665), (137, 157790), (155, 139466), (274, 78895), (310, 69733), (509, 42470), (685, 31558), (1018, 21235), (1370, 15779), (2545, 8494), (4247, 5090)]