668157880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1\times {\mathrm{229}}^1$

素因数の和:465

約数の個数: 128

約数和(自身を含む): 1687795200

約数和(自身を除く): 1019637320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 181, 229, 248, 260, 310, 362, 403, 458, 520, 620, 724, 806, 905, 916, 1145, 1240, 1448, 1612, 1810, 1832, 2015, 2290, 2353, 2977, 3224, 3620, 4030, 4580, 4706, 5611, 5954, 7099, 7240, 8060, 9160, 9412, 11222, 11765, 11908, 14198, 14885, 16120, 18824, 22444, 23530, 23816, 28055, 28396, 29770, 35495, 41449, 44888, 47060, 56110, 56792, 59540, 70990, 72943, 82898, 92287, 94120, 112220, 119080, 141980, 145886, 165796, 184574, 207245, 224440, 283960, 291772, 331592, 364715, 369148, 414490, 461435, 538837, 583544, 729430, 738296, 828980, 922870, 1077674, 1284919, 1458860, 1657960, 1845740, 2155348, 2569838, 2694185, 2917720, 3691480, 4310696, 5139676, 5388370, 6424595, 10279352, 10776740, 12849190, 16703947, 21553480, 25698380, 33407894, 51396760, 66815788, 83519735, 133631576, 167039470, 334078940, 668157880]

約数ペア:

[(1, 668157880), (2, 334078940), (4, 167039470), (5, 133631576), (8, 83519735), (10, 66815788), (13, 51396760), (20, 33407894), (26, 25698380), (31, 21553480), (40, 16703947), (52, 12849190), (62, 10776740), (65, 10279352), (104, 6424595), (124, 5388370), (130, 5139676), (155, 4310696), (181, 3691480), (229, 2917720), (248, 2694185), (260, 2569838), (310, 2155348), (362, 1845740), (403, 1657960), (458, 1458860), (520, 1284919), (620, 1077674), (724, 922870), (806, 828980), (905, 738296), (916, 729430), (1145, 583544), (1240, 538837), (1448, 461435), (1612, 414490), (1810, 369148), (1832, 364715), (2015, 331592), (2290, 291772), (2353, 283960), (2977, 224440), (3224, 207245), (3620, 184574), (4030, 165796), (4580, 145886), (4706, 141980), (5611, 119080), (5954, 112220), (7099, 94120), (7240, 92287), (8060, 82898), (9160, 72943), (9412, 70990), (11222, 59540), (11765, 56792), (11908, 56110), (14198, 47060), (14885, 44888), (16120, 41449), (18824, 35495), (22444, 29770), (23530, 28396), (23816, 28055)]