21865740

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{97}}^1$

素因数の和:156

約数の個数: 144

約数和(自身を含む): 70762272

約数和(自身を除く): 48896532

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 97, 102, 130, 156, 170, 194, 195, 204, 221, 255, 260, 289, 291, 340, 388, 390, 442, 485, 510, 578, 582, 663, 780, 867, 884, 970, 1020, 1105, 1156, 1164, 1261, 1326, 1445, 1455, 1649, 1734, 1940, 2210, 2522, 2652, 2890, 2910, 3298, 3315, 3468, 3757, 3783, 4335, 4420, 4947, 5044, 5780, 5820, 6305, 6596, 6630, 7514, 7566, 8245, 8670, 9894, 11271, 12610, 13260, 15028, 15132, 16490, 17340, 18785, 18915, 19788, 21437, 22542, 24735, 25220, 28033, 32980, 37570, 37830, 42874, 45084, 49470, 56066, 56355, 64311, 75140, 75660, 84099, 85748, 98940, 107185, 112132, 112710, 128622, 140165, 168198, 214370, 225420, 257244, 280330, 321555, 336396, 364429, 420495, 428740, 560660, 643110, 728858, 840990, 1093287, 1286220, 1457716, 1681980, 1822145, 2186574, 3644290, 4373148, 5466435, 7288580, 10932870, 21865740]

約数ペア:

[(1, 21865740), (2, 10932870), (3, 7288580), (4, 5466435), (5, 4373148), (6, 3644290), (10, 2186574), (12, 1822145), (13, 1681980), (15, 1457716), (17, 1286220), (20, 1093287), (26, 840990), (30, 728858), (34, 643110), (39, 560660), (51, 428740), (52, 420495), (60, 364429), (65, 336396), (68, 321555), (78, 280330), (85, 257244), (97, 225420), (102, 214370), (130, 168198), (156, 140165), (170, 128622), (194, 112710), (195, 112132), (204, 107185), (221, 98940), (255, 85748), (260, 84099), (289, 75660), (291, 75140), (340, 64311), (388, 56355), (390, 56066), (442, 49470), (485, 45084), (510, 42874), (578, 37830), (582, 37570), (663, 32980), (780, 28033), (867, 25220), (884, 24735), (970, 22542), (1020, 21437), (1105, 19788), (1156, 18915), (1164, 18785), (1261, 17340), (1326, 16490), (1445, 15132), (1455, 15028), (1649, 13260), (1734, 12610), (1940, 11271), (2210, 9894), (2522, 8670), (2652, 8245), (2890, 7566), (2910, 7514), (3298, 6630), (3315, 6596), (3468, 6305), (3757, 5820), (3783, 5780), (4335, 5044), (4420, 4947)]