278013890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{613}}^1$

素因数の和:688

約数の個数: 128

約数和(自身を含む): 679034880

約数和(自身を除く): 401020990

約数列:

[1, 2, 5, 7, 10, 11, 14, 19, 22, 31, 35, 38, 55, 62, 70, 77, 95, 110, 133, 154, 155, 190, 209, 217, 266, 310, 341, 385, 418, 434, 589, 613, 665, 682, 770, 1045, 1085, 1178, 1226, 1330, 1463, 1705, 2090, 2170, 2387, 2926, 2945, 3065, 3410, 4123, 4291, 4774, 5890, 6130, 6479, 6743, 7315, 8246, 8582, 11647, 11935, 12958, 13486, 14630, 19003, 20615, 21455, 23294, 23870, 32395, 33715, 38006, 41230, 42910, 45353, 47201, 58235, 64790, 67430, 81529, 90706, 94402, 95015, 116470, 128117, 133021, 163058, 190030, 209033, 226765, 236005, 256234, 266042, 361057, 407645, 418066, 453530, 472010, 640585, 665105, 722114, 815290, 896819, 1045165, 1281170, 1330210, 1463231, 1793638, 1805285, 2090330, 2527399, 2926462, 3610570, 3971627, 4484095, 5054798, 7316155, 7943254, 8968190, 12636995, 14632310, 19858135, 25273990, 27801389, 39716270, 55602778, 139006945, 278013890]

約数ペア:

[(1, 278013890), (2, 139006945), (5, 55602778), (7, 39716270), (10, 27801389), (11, 25273990), (14, 19858135), (19, 14632310), (22, 12636995), (31, 8968190), (35, 7943254), (38, 7316155), (55, 5054798), (62, 4484095), (70, 3971627), (77, 3610570), (95, 2926462), (110, 2527399), (133, 2090330), (154, 1805285), (155, 1793638), (190, 1463231), (209, 1330210), (217, 1281170), (266, 1045165), (310, 896819), (341, 815290), (385, 722114), (418, 665105), (434, 640585), (589, 472010), (613, 453530), (665, 418066), (682, 407645), (770, 361057), (1045, 266042), (1085, 256234), (1178, 236005), (1226, 226765), (1330, 209033), (1463, 190030), (1705, 163058), (2090, 133021), (2170, 128117), (2387, 116470), (2926, 95015), (2945, 94402), (3065, 90706), (3410, 81529), (4123, 67430), (4291, 64790), (4774, 58235), (5890, 47201), (6130, 45353), (6479, 42910), (6743, 41230), (7315, 38006), (8246, 33715), (8582, 32395), (11647, 23870), (11935, 23294), (12958, 21455), (13486, 20615), (14630, 19003)]