128579320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{1069}}^1$

素因数の和:1208

約数の個数: 64

約数和(自身を含む): 301996800

約数和(自身を除く): 173417480

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 124, 155, 194, 248, 310, 388, 485, 620, 776, 970, 1069, 1240, 1940, 2138, 3007, 3880, 4276, 5345, 6014, 8552, 10690, 12028, 15035, 21380, 24056, 30070, 33139, 42760, 60140, 66278, 103693, 120280, 132556, 165695, 207386, 265112, 331390, 414772, 518465, 662780, 829544, 1036930, 1325560, 2073860, 3214483, 4147720, 6428966, 12857932, 16072415, 25715864, 32144830, 64289660, 128579320]

約数ペア:

[(1, 128579320), (2, 64289660), (4, 32144830), (5, 25715864), (8, 16072415), (10, 12857932), (20, 6428966), (31, 4147720), (40, 3214483), (62, 2073860), (97, 1325560), (124, 1036930), (155, 829544), (194, 662780), (248, 518465), (310, 414772), (388, 331390), (485, 265112), (620, 207386), (776, 165695), (970, 132556), (1069, 120280), (1240, 103693), (1940, 66278), (2138, 60140), (3007, 42760), (3880, 33139), (4276, 30070), (5345, 24056), (6014, 21380), (8552, 15035), (10690, 12028)]