20281560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13001}}^1$

素因数の和:13028

約数の個数: 64

約数和(自身を含む): 65530080

約数和(自身を除く): 45248520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13001, 26002, 39003, 52004, 65005, 78006, 104008, 130010, 156012, 169013, 195015, 260020, 312024, 338026, 390030, 507039, 520040, 676052, 780060, 845065, 1014078, 1352104, 1560120, 1690130, 2028156, 2535195, 3380260, 4056312, 5070390, 6760520, 10140780, 20281560]

約数ペア:

[(1, 20281560), (2, 10140780), (3, 6760520), (4, 5070390), (5, 4056312), (6, 3380260), (8, 2535195), (10, 2028156), (12, 1690130), (13, 1560120), (15, 1352104), (20, 1014078), (24, 845065), (26, 780060), (30, 676052), (39, 520040), (40, 507039), (52, 390030), (60, 338026), (65, 312024), (78, 260020), (104, 195015), (120, 169013), (130, 156012), (156, 130010), (195, 104008), (260, 78006), (312, 65005), (390, 52004), (520, 39003), (780, 26002), (1560, 13001)]