19738810

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{199}}^1$

素因数の和:335

約数の個数: 64

約数和(自身を含む): 44352000

約数和(自身を除く): 24613190

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 109, 130, 182, 199, 218, 398, 455, 545, 763, 910, 995, 1090, 1393, 1417, 1526, 1990, 2587, 2786, 2834, 3815, 5174, 6965, 7085, 7630, 9919, 12935, 13930, 14170, 18109, 19838, 21691, 25870, 36218, 43382, 49595, 90545, 99190, 108455, 151837, 181090, 216910, 281983, 303674, 563966, 759185, 1409915, 1518370, 1973881, 2819830, 3947762, 9869405, 19738810]

約数ペア:

[(1, 19738810), (2, 9869405), (5, 3947762), (7, 2819830), (10, 1973881), (13, 1518370), (14, 1409915), (26, 759185), (35, 563966), (65, 303674), (70, 281983), (91, 216910), (109, 181090), (130, 151837), (182, 108455), (199, 99190), (218, 90545), (398, 49595), (455, 43382), (545, 36218), (763, 25870), (910, 21691), (995, 19838), (1090, 18109), (1393, 14170), (1417, 13930), (1526, 12935), (1990, 9919), (2587, 7630), (2786, 7085), (2834, 6965), (3815, 5174)]