21964740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{241}}^1$

素因数の和:298

約数の個数: 144

約数和(自身を含む): 74156544

約数和(自身を除く): 52191804

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 241, 245, 294, 310, 372, 420, 434, 465, 482, 490, 588, 620, 651, 723, 735, 868, 930, 964, 980, 1085, 1205, 1302, 1446, 1470, 1519, 1687, 1860, 2170, 2410, 2604, 2892, 2940, 3038, 3255, 3374, 3615, 4340, 4557, 4820, 5061, 6076, 6510, 6748, 7230, 7471, 7595, 8435, 9114, 10122, 11809, 13020, 14460, 14942, 15190, 16870, 18228, 20244, 22413, 22785, 23618, 25305, 29884, 30380, 33740, 35427, 37355, 44826, 45570, 47236, 50610, 52297, 59045, 70854, 74710, 89652, 91140, 101220, 104594, 112065, 118090, 141708, 149420, 156891, 177135, 209188, 224130, 236180, 261485, 313782, 354270, 366079, 448260, 522970, 627564, 708540, 732158, 784455, 1045940, 1098237, 1464316, 1568910, 1830395, 2196474, 3137820, 3660790, 4392948, 5491185, 7321580, 10982370, 21964740]

約数ペア:

[(1, 21964740), (2, 10982370), (3, 7321580), (4, 5491185), (5, 4392948), (6, 3660790), (7, 3137820), (10, 2196474), (12, 1830395), (14, 1568910), (15, 1464316), (20, 1098237), (21, 1045940), (28, 784455), (30, 732158), (31, 708540), (35, 627564), (42, 522970), (49, 448260), (60, 366079), (62, 354270), (70, 313782), (84, 261485), (93, 236180), (98, 224130), (105, 209188), (124, 177135), (140, 156891), (147, 149420), (155, 141708), (186, 118090), (196, 112065), (210, 104594), (217, 101220), (241, 91140), (245, 89652), (294, 74710), (310, 70854), (372, 59045), (420, 52297), (434, 50610), (465, 47236), (482, 45570), (490, 44826), (588, 37355), (620, 35427), (651, 33740), (723, 30380), (735, 29884), (868, 25305), (930, 23618), (964, 22785), (980, 22413), (1085, 20244), (1205, 18228), (1302, 16870), (1446, 15190), (1470, 14942), (1519, 14460), (1687, 13020), (1860, 11809), (2170, 10122), (2410, 9114), (2604, 8435), (2892, 7595), (2940, 7471), (3038, 7230), (3255, 6748), (3374, 6510), (3615, 6076), (4340, 5061), (4557, 4820)]