18720780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{24001}}^1$

素因数の和:24026

約数の個数: 48

約数和(自身を含む): 56452704

約数和(自身を除く): 37731924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 24001, 48002, 72003, 96004, 120005, 144006, 240010, 288012, 312013, 360015, 480020, 624026, 720030, 936039, 1248052, 1440060, 1560065, 1872078, 3120130, 3744156, 4680195, 6240260, 9360390, 18720780]

約数ペア:

[(1, 18720780), (2, 9360390), (3, 6240260), (4, 4680195), (5, 3744156), (6, 3120130), (10, 1872078), (12, 1560065), (13, 1440060), (15, 1248052), (20, 936039), (26, 720030), (30, 624026), (39, 480020), (52, 360015), (60, 312013), (65, 288012), (78, 240010), (130, 144006), (156, 120005), (195, 96004), (260, 72003), (390, 48002), (780, 24001)]