13278340

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{421}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 29776320

約数和(自身を除く): 16497980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 83, 95, 166, 190, 332, 380, 415, 421, 830, 842, 1577, 1660, 1684, 2105, 3154, 4210, 6308, 7885, 7999, 8420, 15770, 15998, 31540, 31996, 34943, 39995, 69886, 79990, 139772, 159980, 174715, 349430, 663917, 698860, 1327834, 2655668, 3319585, 6639170, 13278340]

約数ペア:

[(1, 13278340), (2, 6639170), (4, 3319585), (5, 2655668), (10, 1327834), (19, 698860), (20, 663917), (38, 349430), (76, 174715), (83, 159980), (95, 139772), (166, 79990), (190, 69886), (332, 39995), (380, 34943), (415, 31996), (421, 31540), (830, 15998), (842, 15770), (1577, 8420), (1660, 7999), (1684, 7885), (2105, 6308), (3154, 4210)]