30881890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 63221760

約数和(自身を除く): 32339870

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 79, 97, 130, 155, 158, 194, 310, 395, 403, 485, 790, 806, 970, 1027, 1261, 2015, 2054, 2449, 2522, 3007, 4030, 4898, 5135, 6014, 6305, 7663, 10270, 12245, 12610, 15035, 15326, 24490, 30070, 31837, 38315, 39091, 63674, 76630, 78182, 99619, 159185, 195455, 199238, 237553, 318370, 390910, 475106, 498095, 996190, 1187765, 2375530, 3088189, 6176378, 15440945, 30881890]

約数ペア:

[(1, 30881890), (2, 15440945), (5, 6176378), (10, 3088189), (13, 2375530), (26, 1187765), (31, 996190), (62, 498095), (65, 475106), (79, 390910), (97, 318370), (130, 237553), (155, 199238), (158, 195455), (194, 159185), (310, 99619), (395, 78182), (403, 76630), (485, 63674), (790, 39091), (806, 38315), (970, 31837), (1027, 30070), (1261, 24490), (2015, 15326), (2054, 15035), (2449, 12610), (2522, 12245), (3007, 10270), (4030, 7663), (4898, 6305), (5135, 6014)]