401777840

素因数分解:

$2^4\times 5^1\times {\mathrm{653}}^1\times {\mathrm{7691}}^1$

素因数の和:8357

約数の個数: 40

約数和(自身を含む): 935685648

約数和(自身を除く): 533907808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 653, 1306, 2612, 3265, 5224, 6530, 7691, 10448, 13060, 15382, 26120, 30764, 38455, 52240, 61528, 76910, 123056, 153820, 307640, 615280, 5022223, 10044446, 20088892, 25111115, 40177784, 50222230, 80355568, 100444460, 200888920, 401777840]

約数ペア:

[(1, 401777840), (2, 200888920), (4, 100444460), (5, 80355568), (8, 50222230), (10, 40177784), (16, 25111115), (20, 20088892), (40, 10044446), (80, 5022223), (653, 615280), (1306, 307640), (2612, 153820), (3265, 123056), (5224, 76910), (6530, 61528), (7691, 52240), (10448, 38455), (13060, 30764), (15382, 26120)]