19660634

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:638

約数の個数: 32

約数和(自身を含む): 35251200

約数和(自身を除く): 15590566

約数列:

[1, 2, 7, 14, 31, 62, 89, 178, 217, 434, 509, 623, 1018, 1246, 2759, 3563, 5518, 7126, 15779, 19313, 31558, 38626, 45301, 90602, 110453, 220906, 317107, 634214, 1404331, 2808662, 9830317, 19660634]

約数ペア:

[(1, 19660634), (2, 9830317), (7, 2808662), (14, 1404331), (31, 634214), (62, 317107), (89, 220906), (178, 110453), (217, 90602), (434, 45301), (509, 38626), (623, 31558), (1018, 19313), (1246, 15779), (2759, 7126), (3563, 5518)]