21993184

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{593}}^1$

素因数の和:683

約数の個数: 48

約数和(自身を含む): 46403280

約数和(自身を除く): 24410096

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 61, 76, 122, 152, 244, 304, 488, 593, 608, 976, 1159, 1186, 1952, 2318, 2372, 4636, 4744, 9272, 9488, 11267, 18544, 18976, 22534, 36173, 37088, 45068, 72346, 90136, 144692, 180272, 289384, 360544, 578768, 687287, 1157536, 1374574, 2749148, 5498296, 10996592, 21993184]

約数ペア:

[(1, 21993184), (2, 10996592), (4, 5498296), (8, 2749148), (16, 1374574), (19, 1157536), (32, 687287), (38, 578768), (61, 360544), (76, 289384), (122, 180272), (152, 144692), (244, 90136), (304, 72346), (488, 45068), (593, 37088), (608, 36173), (976, 22534), (1159, 18976), (1186, 18544), (1952, 11267), (2318, 9488), (2372, 9272), (4636, 4744)]