28077820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1997}}^1$

素因数の和:2062

約数の個数: 48

約数和(自身を含む): 63776160

約数和(自身を除く): 35698340

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1406, 1997, 2812, 3515, 3994, 7030, 7988, 9985, 14060, 19970, 37943, 39940, 73889, 75886, 147778, 151772, 189715, 295556, 369445, 379430, 738890, 758860, 1403891, 1477780, 2807782, 5615564, 7019455, 14038910, 28077820]

約数ペア:

[(1, 28077820), (2, 14038910), (4, 7019455), (5, 5615564), (10, 2807782), (19, 1477780), (20, 1403891), (37, 758860), (38, 738890), (74, 379430), (76, 369445), (95, 295556), (148, 189715), (185, 151772), (190, 147778), (370, 75886), (380, 73889), (703, 39940), (740, 37943), (1406, 19970), (1997, 14060), (2812, 9985), (3515, 7988), (3994, 7030)]