20256470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 64

約数和(自身を含む): 42336000

約数和(自身を除く): 22079530

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 59, 65, 95, 118, 130, 139, 190, 247, 278, 295, 494, 590, 695, 767, 1121, 1235, 1390, 1534, 1807, 2242, 2470, 2641, 3614, 3835, 5282, 5605, 7670, 8201, 9035, 11210, 13205, 14573, 16402, 18070, 26410, 29146, 34333, 41005, 68666, 72865, 82010, 106613, 145730, 155819, 171665, 213226, 311638, 343330, 533065, 779095, 1066130, 1558190, 2025647, 4051294, 10128235, 20256470]

約数ペア:

[(1, 20256470), (2, 10128235), (5, 4051294), (10, 2025647), (13, 1558190), (19, 1066130), (26, 779095), (38, 533065), (59, 343330), (65, 311638), (95, 213226), (118, 171665), (130, 155819), (139, 145730), (190, 106613), (247, 82010), (278, 72865), (295, 68666), (494, 41005), (590, 34333), (695, 29146), (767, 26410), (1121, 18070), (1235, 16402), (1390, 14573), (1534, 13205), (1807, 11210), (2242, 9035), (2470, 8201), (2641, 7670), (3614, 5605), (3835, 5282)]