64409320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{409}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 151142400

約数和(自身を除く): 86733080

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 127, 155, 248, 254, 310, 409, 508, 620, 635, 818, 1016, 1240, 1270, 1636, 2045, 2540, 3272, 3937, 4090, 5080, 7874, 8180, 12679, 15748, 16360, 19685, 25358, 31496, 39370, 50716, 51943, 63395, 78740, 101432, 103886, 126790, 157480, 207772, 253580, 259715, 415544, 507160, 519430, 1038860, 1610233, 2077720, 3220466, 6440932, 8051165, 12881864, 16102330, 32204660, 64409320]

約数ペア:

[(1, 64409320), (2, 32204660), (4, 16102330), (5, 12881864), (8, 8051165), (10, 6440932), (20, 3220466), (31, 2077720), (40, 1610233), (62, 1038860), (124, 519430), (127, 507160), (155, 415544), (248, 259715), (254, 253580), (310, 207772), (409, 157480), (508, 126790), (620, 103886), (635, 101432), (818, 78740), (1016, 63395), (1240, 51943), (1270, 50716), (1636, 39370), (2045, 31496), (2540, 25358), (3272, 19685), (3937, 16360), (4090, 15748), (5080, 12679), (7874, 8180)]