19719440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{283}}^1$

素因数の和:376

約数の個数: 80

約数和(自身を含む): 50288448

約数和(自身を除く): 30569008

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 67, 80, 104, 130, 134, 208, 260, 268, 283, 335, 520, 536, 566, 670, 871, 1040, 1072, 1132, 1340, 1415, 1742, 2264, 2680, 2830, 3484, 3679, 4355, 4528, 5360, 5660, 6968, 7358, 8710, 11320, 13936, 14716, 17420, 18395, 18961, 22640, 29432, 34840, 36790, 37922, 58864, 69680, 73580, 75844, 94805, 147160, 151688, 189610, 246493, 294320, 303376, 379220, 492986, 758440, 985972, 1232465, 1516880, 1971944, 2464930, 3943888, 4929860, 9859720, 19719440]

約数ペア:

[(1, 19719440), (2, 9859720), (4, 4929860), (5, 3943888), (8, 2464930), (10, 1971944), (13, 1516880), (16, 1232465), (20, 985972), (26, 758440), (40, 492986), (52, 379220), (65, 303376), (67, 294320), (80, 246493), (104, 189610), (130, 151688), (134, 147160), (208, 94805), (260, 75844), (268, 73580), (283, 69680), (335, 58864), (520, 37922), (536, 36790), (566, 34840), (670, 29432), (871, 22640), (1040, 18961), (1072, 18395), (1132, 17420), (1340, 14716), (1415, 13936), (1742, 11320), (2264, 8710), (2680, 7358), (2830, 6968), (3484, 5660), (3679, 5360), (4355, 4528)]