78453440

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{18859}}^1$

素因数の和:18889

約数の個数: 56

約数和(自身を含む): 201198480

約数和(自身を除く): 122745040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 18859, 37718, 75436, 94295, 150872, 188590, 245167, 301744, 377180, 490334, 603488, 754360, 980668, 1206976, 1225835, 1508720, 1961336, 2451670, 3017440, 3922672, 4903340, 6034880, 7845344, 9806680, 15690688, 19613360, 39226720, 78453440]

約数ペア:

[(1, 78453440), (2, 39226720), (4, 19613360), (5, 15690688), (8, 9806680), (10, 7845344), (13, 6034880), (16, 4903340), (20, 3922672), (26, 3017440), (32, 2451670), (40, 1961336), (52, 1508720), (64, 1225835), (65, 1206976), (80, 980668), (104, 754360), (130, 603488), (160, 490334), (208, 377180), (260, 301744), (320, 245167), (416, 188590), (520, 150872), (832, 94295), (1040, 75436), (2080, 37718), (4160, 18859)]