427799380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{2749}}^1$

素因数の和:3040

約数の個数: 48

約数和(自身を含む): 931392000

約数和(自身を除く): 503592620

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 251, 310, 502, 620, 1004, 1255, 2510, 2749, 5020, 5498, 7781, 10996, 13745, 15562, 27490, 31124, 38905, 54980, 77810, 85219, 155620, 170438, 340876, 426095, 689999, 852190, 1379998, 1704380, 2759996, 3449995, 6899990, 13799980, 21389969, 42779938, 85559876, 106949845, 213899690, 427799380]

約数ペア:

[(1, 427799380), (2, 213899690), (4, 106949845), (5, 85559876), (10, 42779938), (20, 21389969), (31, 13799980), (62, 6899990), (124, 3449995), (155, 2759996), (251, 1704380), (310, 1379998), (502, 852190), (620, 689999), (1004, 426095), (1255, 340876), (2510, 170438), (2749, 155620), (5020, 85219), (5498, 77810), (7781, 54980), (10996, 38905), (13745, 31124), (15562, 27490)]