31811890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:559

約数の個数: 64

約数和(自身を含む): 68014080

約数和(自身を除く): 36202190

約数列:

[1, 2, 5, 10, 11, 19, 22, 31, 38, 55, 62, 95, 110, 155, 190, 209, 310, 341, 418, 491, 589, 682, 982, 1045, 1178, 1705, 2090, 2455, 2945, 3410, 4910, 5401, 5890, 6479, 9329, 10802, 12958, 15221, 18658, 27005, 30442, 32395, 46645, 54010, 64790, 76105, 93290, 102619, 152210, 167431, 205238, 289199, 334862, 513095, 578398, 837155, 1026190, 1445995, 1674310, 2891990, 3181189, 6362378, 15905945, 31811890]

約数ペア:

[(1, 31811890), (2, 15905945), (5, 6362378), (10, 3181189), (11, 2891990), (19, 1674310), (22, 1445995), (31, 1026190), (38, 837155), (55, 578398), (62, 513095), (95, 334862), (110, 289199), (155, 205238), (190, 167431), (209, 152210), (310, 102619), (341, 93290), (418, 76105), (491, 64790), (589, 54010), (682, 46645), (982, 32395), (1045, 30442), (1178, 27005), (1705, 18658), (2090, 15221), (2455, 12958), (2945, 10802), (3410, 9329), (4910, 6479), (5401, 5890)]