161745404

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:474

約数の個数: 48

約数和(自身を含む): 306230400

約数和(自身を除く): 144484996

約数列:

[1, 2, 4, 19, 38, 61, 76, 122, 139, 244, 251, 278, 502, 556, 1004, 1159, 2318, 2641, 4636, 4769, 5282, 8479, 9538, 10564, 15311, 16958, 19076, 30622, 33916, 34889, 61244, 69778, 139556, 161101, 290909, 322202, 581818, 644404, 662891, 1163636, 1325782, 2128229, 2651564, 4256458, 8512916, 40436351, 80872702, 161745404]

約数ペア:

[(1, 161745404), (2, 80872702), (4, 40436351), (19, 8512916), (38, 4256458), (61, 2651564), (76, 2128229), (122, 1325782), (139, 1163636), (244, 662891), (251, 644404), (278, 581818), (502, 322202), (556, 290909), (1004, 161101), (1159, 139556), (2318, 69778), (2641, 61244), (4636, 34889), (4769, 33916), (5282, 30622), (8479, 19076), (9538, 16958), (10564, 15311)]