21103072

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{569}}^1$

素因数の和:659

約数の個数: 48

約数和(自身を含む): 44528400

約数和(自身を除く): 23425328

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 61, 76, 122, 152, 244, 304, 488, 569, 608, 976, 1138, 1159, 1952, 2276, 2318, 4552, 4636, 9104, 9272, 10811, 18208, 18544, 21622, 34709, 37088, 43244, 69418, 86488, 138836, 172976, 277672, 345952, 555344, 659471, 1110688, 1318942, 2637884, 5275768, 10551536, 21103072]

約数ペア:

[(1, 21103072), (2, 10551536), (4, 5275768), (8, 2637884), (16, 1318942), (19, 1110688), (32, 659471), (38, 555344), (61, 345952), (76, 277672), (122, 172976), (152, 138836), (244, 86488), (304, 69418), (488, 43244), (569, 37088), (608, 34709), (976, 21622), (1138, 18544), (1159, 18208), (1952, 10811), (2276, 9272), (2318, 9104), (4552, 4636)]