21680710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{2153}}^1$

素因数の和:2232

約数の個数: 32

約数和(自身を含む): 41873760

約数和(自身を除く): 20193050

約数列:

[1, 2, 5, 10, 19, 38, 53, 95, 106, 190, 265, 530, 1007, 2014, 2153, 4306, 5035, 10070, 10765, 21530, 40907, 81814, 114109, 204535, 228218, 409070, 570545, 1141090, 2168071, 4336142, 10840355, 21680710]

約数ペア:

[(1, 21680710), (2, 10840355), (5, 4336142), (10, 2168071), (19, 1141090), (38, 570545), (53, 409070), (95, 228218), (106, 204535), (190, 114109), (265, 81814), (530, 40907), (1007, 21530), (2014, 10765), (2153, 10070), (4306, 5035)]