21505204

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{45179}}^1$

素因数の和:45207

約数の個数: 24

約数和(自身を含む): 45541440

約数和(自身を除く): 24036236

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 238, 476, 45179, 90358, 180716, 316253, 632506, 768043, 1265012, 1536086, 3072172, 5376301, 10752602, 21505204]

約数ペア:

[(1, 21505204), (2, 10752602), (4, 5376301), (7, 3072172), (14, 1536086), (17, 1265012), (28, 768043), (34, 632506), (68, 316253), (119, 180716), (238, 90358), (476, 45179)]