20945708

素因数分解:

$2^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{409}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 44083200

約数和(自身を除く): 23137492

約数列:

[1, 2, 4, 7, 14, 28, 31, 59, 62, 118, 124, 217, 236, 409, 413, 434, 818, 826, 868, 1636, 1652, 1829, 2863, 3658, 5726, 7316, 11452, 12679, 12803, 24131, 25358, 25606, 48262, 50716, 51212, 88753, 96524, 168917, 177506, 337834, 355012, 675668, 748061, 1496122, 2992244, 5236427, 10472854, 20945708]

約数ペア:

[(1, 20945708), (2, 10472854), (4, 5236427), (7, 2992244), (14, 1496122), (28, 748061), (31, 675668), (59, 355012), (62, 337834), (118, 177506), (124, 168917), (217, 96524), (236, 88753), (409, 51212), (413, 50716), (434, 48262), (818, 25606), (826, 25358), (868, 24131), (1636, 12803), (1652, 12679), (1829, 11452), (2863, 7316), (3658, 5726)]