21051030

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{701}}^1$

素因数の和:742

約数の個数: 128

約数和(自身を含む): 67931136

約数和(自身を除く): 46880106

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 21, 22, 26, 30, 33, 35, 39, 42, 55, 65, 66, 70, 77, 78, 91, 105, 110, 130, 143, 154, 165, 182, 195, 210, 231, 273, 286, 330, 385, 390, 429, 455, 462, 546, 701, 715, 770, 858, 910, 1001, 1155, 1365, 1402, 1430, 2002, 2103, 2145, 2310, 2730, 3003, 3505, 4206, 4290, 4907, 5005, 6006, 7010, 7711, 9113, 9814, 10010, 10515, 14721, 15015, 15422, 18226, 21030, 23133, 24535, 27339, 29442, 30030, 38555, 45565, 46266, 49070, 53977, 54678, 63791, 73605, 77110, 91130, 100243, 107954, 115665, 127582, 136695, 147210, 161931, 191373, 200486, 231330, 269885, 273390, 300729, 318955, 323862, 382746, 501215, 539770, 601458, 637910, 701701, 809655, 956865, 1002430, 1403402, 1503645, 1619310, 1913730, 2105103, 3007290, 3508505, 4210206, 7017010, 10525515, 21051030]

約数ペア:

[(1, 21051030), (2, 10525515), (3, 7017010), (5, 4210206), (6, 3508505), (7, 3007290), (10, 2105103), (11, 1913730), (13, 1619310), (14, 1503645), (15, 1403402), (21, 1002430), (22, 956865), (26, 809655), (30, 701701), (33, 637910), (35, 601458), (39, 539770), (42, 501215), (55, 382746), (65, 323862), (66, 318955), (70, 300729), (77, 273390), (78, 269885), (91, 231330), (105, 200486), (110, 191373), (130, 161931), (143, 147210), (154, 136695), (165, 127582), (182, 115665), (195, 107954), (210, 100243), (231, 91130), (273, 77110), (286, 73605), (330, 63791), (385, 54678), (390, 53977), (429, 49070), (455, 46266), (462, 45565), (546, 38555), (701, 30030), (715, 29442), (770, 27339), (858, 24535), (910, 23133), (1001, 21030), (1155, 18226), (1365, 15422), (1402, 15015), (1430, 14721), (2002, 10515), (2103, 10010), (2145, 9814), (2310, 9113), (2730, 7711), (3003, 7010), (3505, 6006), (4206, 5005), (4290, 4907)]