19974448

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:206

約数の個数: 60

約数和(自身を含む): 42887880

約数和(自身を除く): 22913432

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 83, 89, 104, 166, 169, 178, 208, 332, 338, 356, 664, 676, 712, 1079, 1157, 1328, 1352, 1424, 2158, 2314, 2704, 4316, 4628, 7387, 8632, 9256, 14027, 14774, 15041, 17264, 18512, 28054, 29548, 30082, 56108, 59096, 60164, 96031, 112216, 118192, 120328, 192062, 224432, 240656, 384124, 768248, 1248403, 1536496, 2496806, 4993612, 9987224, 19974448]

約数ペア:

[(1, 19974448), (2, 9987224), (4, 4993612), (8, 2496806), (13, 1536496), (16, 1248403), (26, 768248), (52, 384124), (83, 240656), (89, 224432), (104, 192062), (166, 120328), (169, 118192), (178, 112216), (208, 96031), (332, 60164), (338, 59096), (356, 56108), (664, 30082), (676, 29548), (712, 28054), (1079, 18512), (1157, 17264), (1328, 15041), (1352, 14774), (1424, 14027), (2158, 9256), (2314, 8632), (2704, 7387), (4316, 4628)]