21380730

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:200

約数の個数: 128

約数和(自身を含む): 63825408

約数和(自身を除く): 42444678

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 17, 21, 30, 34, 35, 42, 51, 53, 70, 85, 102, 105, 106, 113, 119, 159, 170, 210, 226, 238, 255, 265, 318, 339, 357, 371, 510, 530, 565, 595, 678, 714, 742, 791, 795, 901, 1113, 1130, 1190, 1582, 1590, 1695, 1785, 1802, 1855, 1921, 2226, 2373, 2703, 3390, 3570, 3710, 3842, 3955, 4505, 4746, 5406, 5565, 5763, 5989, 6307, 7910, 9010, 9605, 11130, 11526, 11865, 11978, 12614, 13447, 13515, 17967, 18921, 19210, 23730, 26894, 27030, 28815, 29945, 31535, 35934, 37842, 40341, 41923, 57630, 59890, 63070, 67235, 80682, 83846, 89835, 94605, 101813, 125769, 134470, 179670, 189210, 201705, 203626, 209615, 251538, 305439, 403410, 419230, 509065, 610878, 628845, 712691, 1018130, 1257690, 1425382, 1527195, 2138073, 3054390, 3563455, 4276146, 7126910, 10690365, 21380730]

約数ペア:

[(1, 21380730), (2, 10690365), (3, 7126910), (5, 4276146), (6, 3563455), (7, 3054390), (10, 2138073), (14, 1527195), (15, 1425382), (17, 1257690), (21, 1018130), (30, 712691), (34, 628845), (35, 610878), (42, 509065), (51, 419230), (53, 403410), (70, 305439), (85, 251538), (102, 209615), (105, 203626), (106, 201705), (113, 189210), (119, 179670), (159, 134470), (170, 125769), (210, 101813), (226, 94605), (238, 89835), (255, 83846), (265, 80682), (318, 67235), (339, 63070), (357, 59890), (371, 57630), (510, 41923), (530, 40341), (565, 37842), (595, 35934), (678, 31535), (714, 29945), (742, 28815), (791, 27030), (795, 26894), (901, 23730), (1113, 19210), (1130, 18921), (1190, 17967), (1582, 13515), (1590, 13447), (1695, 12614), (1785, 11978), (1802, 11865), (1855, 11526), (1921, 11130), (2226, 9605), (2373, 9010), (2703, 7910), (3390, 6307), (3570, 5989), (3710, 5763), (3842, 5565), (3955, 5406), (4505, 4746)]