21437312

素因数分解:

$2^7\times {\mathrm{13}}^2\times {\mathrm{991}}^1$

素因数の和:1031

約数の個数: 48

約数和(自身を含む): 46291680

約数和(自身を除く): 24854368

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 338, 416, 676, 832, 991, 1352, 1664, 1982, 2704, 3964, 5408, 7928, 10816, 12883, 15856, 21632, 25766, 31712, 51532, 63424, 103064, 126848, 167479, 206128, 334958, 412256, 669916, 824512, 1339832, 1649024, 2679664, 5359328, 10718656, 21437312]

約数ペア:

[(1, 21437312), (2, 10718656), (4, 5359328), (8, 2679664), (13, 1649024), (16, 1339832), (26, 824512), (32, 669916), (52, 412256), (64, 334958), (104, 206128), (128, 167479), (169, 126848), (208, 103064), (338, 63424), (416, 51532), (676, 31712), (832, 25766), (991, 21632), (1352, 15856), (1664, 12883), (1982, 10816), (2704, 7928), (3964, 5408)]