139480940

素因数分解:

$2^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1\times {\mathrm{383}}^1$

素因数の和:662

約数の個数: 48

約数和(自身を含む): 298045440

約数和(自身を除く): 158564500

約数列:

[1, 2, 4, 5, 10, 20, 131, 139, 262, 278, 383, 524, 556, 655, 695, 766, 1310, 1390, 1532, 1915, 2620, 2780, 3830, 7660, 18209, 36418, 50173, 53237, 72836, 91045, 100346, 106474, 182090, 200692, 212948, 250865, 266185, 364180, 501730, 532370, 1003460, 1064740, 6974047, 13948094, 27896188, 34870235, 69740470, 139480940]

約数ペア:

[(1, 139480940), (2, 69740470), (4, 34870235), (5, 27896188), (10, 13948094), (20, 6974047), (131, 1064740), (139, 1003460), (262, 532370), (278, 501730), (383, 364180), (524, 266185), (556, 250865), (655, 212948), (695, 200692), (766, 182090), (1310, 106474), (1390, 100346), (1532, 91045), (1915, 72836), (2620, 53237), (2780, 50173), (3830, 36418), (7660, 18209)]