256060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:106

約数の個数: 48

約数和(自身を含む): 645120

約数和(自身を除く): 389060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 59, 62, 70, 118, 124, 140, 155, 217, 236, 295, 310, 413, 434, 590, 620, 826, 868, 1085, 1180, 1652, 1829, 2065, 2170, 3658, 4130, 4340, 7316, 8260, 9145, 12803, 18290, 25606, 36580, 51212, 64015, 128030, 256060]

約数ペア:

[(1, 256060), (2, 128030), (4, 64015), (5, 51212), (7, 36580), (10, 25606), (14, 18290), (20, 12803), (28, 9145), (31, 8260), (35, 7316), (59, 4340), (62, 4130), (70, 3658), (118, 2170), (124, 2065), (140, 1829), (155, 1652), (217, 1180), (236, 1085), (295, 868), (310, 826), (413, 620), (434, 590)]