255143020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{179}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 643507200

約数和(自身を除く): 388364180

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 31, 38, 44, 55, 62, 76, 95, 110, 121, 124, 155, 179, 190, 209, 220, 242, 310, 341, 358, 380, 418, 484, 589, 605, 620, 682, 716, 836, 895, 1045, 1178, 1210, 1364, 1705, 1790, 1969, 2090, 2299, 2356, 2420, 2945, 3401, 3410, 3580, 3751, 3938, 4180, 4598, 5549, 5890, 6479, 6802, 6820, 7502, 7876, 9196, 9845, 11098, 11495, 11780, 12958, 13604, 15004, 17005, 18755, 19690, 21659, 22196, 22990, 25916, 27745, 32395, 34010, 37411, 37510, 39380, 43318, 45980, 55490, 61039, 64790, 68020, 71269, 74822, 75020, 86636, 105431, 108295, 110980, 122078, 129580, 142538, 149644, 187055, 210862, 216590, 244156, 285076, 305195, 356345, 374110, 411521, 421724, 433180, 527155, 610390, 671429, 712690, 748220, 823042, 1054310, 1159741, 1220780, 1342858, 1425380, 1646084, 2057605, 2108620, 2319482, 2685716, 3357145, 4115210, 4638964, 5798705, 6714290, 8230420, 11597410, 12757151, 13428580, 23194820, 25514302, 51028604, 63785755, 127571510, 255143020]

約数ペア:

[(1, 255143020), (2, 127571510), (4, 63785755), (5, 51028604), (10, 25514302), (11, 23194820), (19, 13428580), (20, 12757151), (22, 11597410), (31, 8230420), (38, 6714290), (44, 5798705), (55, 4638964), (62, 4115210), (76, 3357145), (95, 2685716), (110, 2319482), (121, 2108620), (124, 2057605), (155, 1646084), (179, 1425380), (190, 1342858), (209, 1220780), (220, 1159741), (242, 1054310), (310, 823042), (341, 748220), (358, 712690), (380, 671429), (418, 610390), (484, 527155), (589, 433180), (605, 421724), (620, 411521), (682, 374110), (716, 356345), (836, 305195), (895, 285076), (1045, 244156), (1178, 216590), (1210, 210862), (1364, 187055), (1705, 149644), (1790, 142538), (1969, 129580), (2090, 122078), (2299, 110980), (2356, 108295), (2420, 105431), (2945, 86636), (3401, 75020), (3410, 74822), (3580, 71269), (3751, 68020), (3938, 64790), (4180, 61039), (4598, 55490), (5549, 45980), (5890, 43318), (6479, 39380), (6802, 37510), (6820, 37411), (7502, 34010), (7876, 32395), (9196, 27745), (9845, 25916), (11098, 22990), (11495, 22196), (11780, 21659), (12958, 19690), (13604, 18755), (15004, 17005)]