28275940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:138

約数の個数: 144

約数和(自身を含む): 78369984

約数和(自身を除く): 50094044

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 43, 44, 49, 55, 61, 70, 77, 86, 98, 110, 122, 140, 154, 172, 196, 215, 220, 244, 245, 301, 305, 308, 385, 427, 430, 473, 490, 539, 602, 610, 671, 770, 854, 860, 946, 980, 1078, 1204, 1220, 1342, 1505, 1540, 1708, 1892, 2107, 2135, 2156, 2365, 2623, 2684, 2695, 2989, 3010, 3311, 3355, 4214, 4270, 4697, 4730, 5246, 5390, 5978, 6020, 6622, 6710, 8428, 8540, 9394, 9460, 10492, 10535, 10780, 11956, 13115, 13244, 13420, 14945, 16555, 18361, 18788, 21070, 23177, 23485, 26230, 28853, 29890, 32879, 33110, 36722, 42140, 46354, 46970, 52460, 57706, 59780, 65758, 66220, 73444, 91805, 92708, 93940, 115412, 115885, 128527, 131516, 144265, 164395, 183610, 201971, 231770, 257054, 288530, 328790, 367220, 403942, 463540, 514108, 577060, 642635, 657580, 807884, 1009855, 1285270, 1413797, 2019710, 2570540, 2827594, 4039420, 5655188, 7068985, 14137970, 28275940]

約数ペア:

[(1, 28275940), (2, 14137970), (4, 7068985), (5, 5655188), (7, 4039420), (10, 2827594), (11, 2570540), (14, 2019710), (20, 1413797), (22, 1285270), (28, 1009855), (35, 807884), (43, 657580), (44, 642635), (49, 577060), (55, 514108), (61, 463540), (70, 403942), (77, 367220), (86, 328790), (98, 288530), (110, 257054), (122, 231770), (140, 201971), (154, 183610), (172, 164395), (196, 144265), (215, 131516), (220, 128527), (244, 115885), (245, 115412), (301, 93940), (305, 92708), (308, 91805), (385, 73444), (427, 66220), (430, 65758), (473, 59780), (490, 57706), (539, 52460), (602, 46970), (610, 46354), (671, 42140), (770, 36722), (854, 33110), (860, 32879), (946, 29890), (980, 28853), (1078, 26230), (1204, 23485), (1220, 23177), (1342, 21070), (1505, 18788), (1540, 18361), (1708, 16555), (1892, 14945), (2107, 13420), (2135, 13244), (2156, 13115), (2365, 11956), (2623, 10780), (2684, 10535), (2695, 10492), (2989, 9460), (3010, 9394), (3311, 8540), (3355, 8428), (4214, 6710), (4270, 6622), (4697, 6020), (4730, 5978), (5246, 5390)]