21436940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{8059}}^1$

素因数の和:8094

約数の個数: 48

約数和(自身を含む): 54163200

約数和(自身を除く): 32726260

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 532, 665, 1330, 2660, 8059, 16118, 32236, 40295, 56413, 80590, 112826, 153121, 161180, 225652, 282065, 306242, 564130, 612484, 765605, 1071847, 1128260, 1531210, 2143694, 3062420, 4287388, 5359235, 10718470, 21436940]

約数ペア:

[(1, 21436940), (2, 10718470), (4, 5359235), (5, 4287388), (7, 3062420), (10, 2143694), (14, 1531210), (19, 1128260), (20, 1071847), (28, 765605), (35, 612484), (38, 564130), (70, 306242), (76, 282065), (95, 225652), (133, 161180), (140, 153121), (190, 112826), (266, 80590), (380, 56413), (532, 40295), (665, 32236), (1330, 16118), (2660, 8059)]