81647370

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{359}}^1$

素因数の和:417

約数の個数: 144

約数和(自身を含む): 256763520

約数和(自身を除く): 175116150

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 19, 21, 30, 35, 38, 42, 45, 57, 63, 70, 90, 95, 105, 114, 126, 133, 171, 190, 210, 266, 285, 315, 342, 359, 361, 399, 570, 630, 665, 718, 722, 798, 855, 1077, 1083, 1197, 1330, 1710, 1795, 1805, 1995, 2154, 2166, 2394, 2513, 2527, 3231, 3249, 3590, 3610, 3990, 5026, 5054, 5385, 5415, 5985, 6462, 6498, 6821, 7539, 7581, 10770, 10830, 11970, 12565, 12635, 13642, 15078, 15162, 16155, 16245, 20463, 22617, 22743, 25130, 25270, 32310, 32490, 34105, 37695, 37905, 40926, 45234, 45486, 47747, 61389, 68210, 75390, 75810, 95494, 102315, 113085, 113715, 122778, 129599, 143241, 204630, 226170, 227430, 238735, 259198, 286482, 306945, 388797, 429723, 477470, 613890, 647995, 716205, 777594, 859446, 907193, 1166391, 1295990, 1432410, 1814386, 1943985, 2148615, 2332782, 2721579, 3887970, 4297230, 4535965, 5443158, 5831955, 8164737, 9071930, 11663910, 13607895, 16329474, 27215790, 40823685, 81647370]

約数ペア:

[(1, 81647370), (2, 40823685), (3, 27215790), (5, 16329474), (6, 13607895), (7, 11663910), (9, 9071930), (10, 8164737), (14, 5831955), (15, 5443158), (18, 4535965), (19, 4297230), (21, 3887970), (30, 2721579), (35, 2332782), (38, 2148615), (42, 1943985), (45, 1814386), (57, 1432410), (63, 1295990), (70, 1166391), (90, 907193), (95, 859446), (105, 777594), (114, 716205), (126, 647995), (133, 613890), (171, 477470), (190, 429723), (210, 388797), (266, 306945), (285, 286482), (315, 259198), (342, 238735), (359, 227430), (361, 226170), (399, 204630), (570, 143241), (630, 129599), (665, 122778), (718, 113715), (722, 113085), (798, 102315), (855, 95494), (1077, 75810), (1083, 75390), (1197, 68210), (1330, 61389), (1710, 47747), (1795, 45486), (1805, 45234), (1995, 40926), (2154, 37905), (2166, 37695), (2394, 34105), (2513, 32490), (2527, 32310), (3231, 25270), (3249, 25130), (3590, 22743), (3610, 22617), (3990, 20463), (5026, 16245), (5054, 16155), (5385, 15162), (5415, 15078), (5985, 13642), (6462, 12635), (6498, 12565), (6821, 11970), (7539, 10830), (7581, 10770)]