19994408

素因数分解:

$2^3\times 7^1\times {\mathrm{67}}^1\times {\mathrm{73}}^2$

素因数の和:226

約数の個数: 48

約数和(自身を含む): 44088480

約数和(自身を除く): 24094072

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 67, 73, 134, 146, 268, 292, 469, 511, 536, 584, 938, 1022, 1876, 2044, 3752, 4088, 4891, 5329, 9782, 10658, 19564, 21316, 34237, 37303, 39128, 42632, 68474, 74606, 136948, 149212, 273896, 298424, 357043, 714086, 1428172, 2499301, 2856344, 4998602, 9997204, 19994408]

約数ペア:

[(1, 19994408), (2, 9997204), (4, 4998602), (7, 2856344), (8, 2499301), (14, 1428172), (28, 714086), (56, 357043), (67, 298424), (73, 273896), (134, 149212), (146, 136948), (268, 74606), (292, 68474), (469, 42632), (511, 39128), (536, 37303), (584, 34237), (938, 21316), (1022, 19564), (1876, 10658), (2044, 9782), (3752, 5329), (4088, 4891)]