28261840

素因数分解:

$2^4\times 5^1\times {\mathrm{541}}^1\times {\mathrm{653}}^1$

素因数の和:1207

約数の個数: 40

約数和(自身を含む): 65931048

約数和(自身を除く): 37669208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 541, 653, 1082, 1306, 2164, 2612, 2705, 3265, 4328, 5224, 5410, 6530, 8656, 10448, 10820, 13060, 21640, 26120, 43280, 52240, 353273, 706546, 1413092, 1766365, 2826184, 3532730, 5652368, 7065460, 14130920, 28261840]

約数ペア:

[(1, 28261840), (2, 14130920), (4, 7065460), (5, 5652368), (8, 3532730), (10, 2826184), (16, 1766365), (20, 1413092), (40, 706546), (80, 353273), (541, 52240), (653, 43280), (1082, 26120), (1306, 21640), (2164, 13060), (2612, 10820), (2705, 10448), (3265, 8656), (4328, 6530), (5224, 5410)]