208341328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{409}}^1$

素因数の和:540

約数の個数: 80

約数和(自身を含む): 455526400

約数和(自身を除く): 247185072

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 79, 104, 124, 158, 208, 248, 316, 403, 409, 496, 632, 806, 818, 1027, 1264, 1612, 1636, 2054, 2449, 3224, 3272, 4108, 4898, 5317, 6448, 6544, 8216, 9796, 10634, 12679, 16432, 19592, 21268, 25358, 31837, 32311, 39184, 42536, 50716, 63674, 64622, 85072, 101432, 127348, 129244, 164827, 202864, 254696, 258488, 329654, 420043, 509392, 516976, 659308, 840086, 1001641, 1318616, 1680172, 2003282, 2637232, 3360344, 4006564, 6720688, 8013128, 13021333, 16026256, 26042666, 52085332, 104170664, 208341328]

約数ペア:

[(1, 208341328), (2, 104170664), (4, 52085332), (8, 26042666), (13, 16026256), (16, 13021333), (26, 8013128), (31, 6720688), (52, 4006564), (62, 3360344), (79, 2637232), (104, 2003282), (124, 1680172), (158, 1318616), (208, 1001641), (248, 840086), (316, 659308), (403, 516976), (409, 509392), (496, 420043), (632, 329654), (806, 258488), (818, 254696), (1027, 202864), (1264, 164827), (1612, 129244), (1636, 127348), (2054, 101432), (2449, 85072), (3224, 64622), (3272, 63674), (4108, 50716), (4898, 42536), (5317, 39184), (6448, 32311), (6544, 31837), (8216, 25358), (9796, 21268), (10634, 19592), (12679, 16432)]