19748935745

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:332

約数の個数: 144

約数和(自身を含む): 31450112064

約数和(自身を除く): 11701176319

約数列:

[1, 5, 7, 11, 35, 49, 55, 61, 67, 77, 121, 163, 245, 305, 335, 385, 427, 469, 539, 605, 671, 737, 815, 847, 1141, 1793, 2135, 2345, 2695, 2989, 3283, 3355, 3685, 4087, 4235, 4697, 5159, 5705, 5929, 7381, 7987, 8107, 8965, 9943, 10921, 12551, 14945, 16415, 19723, 20435, 23485, 25795, 28609, 29645, 32879, 36113, 36905, 39935, 40535, 44957, 49715, 51667, 54605, 56749, 62755, 69601, 76447, 87857, 98615, 109373, 120131, 138061, 143045, 164395, 180565, 200263, 224785, 258335, 283745, 314699, 348005, 361669, 382235, 397243, 439285, 487207, 494527, 535129, 546865, 600655, 666181, 690305, 765611, 840917, 966427, 1001315, 1203103, 1321441, 1573495, 1808345, 1986215, 2202893, 2436035, 2472635, 2675645, 3330905, 3461689, 3828055, 4204585, 4663267, 4832135, 5359277, 5886419, 6015515, 6607205, 7327991, 8421721, 9250087, 11014465, 17308445, 23316335, 24231823, 26796385, 29432095, 32642869, 36639955, 42108605, 46250435, 51295937, 58952047, 64750609, 80607901, 121159115, 163214345, 256479685, 294760235, 323753045, 359071559, 403039505, 564255307, 1795357795, 2821276535, 3949787149, 19748935745]

約数ペア:

[(1, 19748935745), (5, 3949787149), (7, 2821276535), (11, 1795357795), (35, 564255307), (49, 403039505), (55, 359071559), (61, 323753045), (67, 294760235), (77, 256479685), (121, 163214345), (163, 121159115), (245, 80607901), (305, 64750609), (335, 58952047), (385, 51295937), (427, 46250435), (469, 42108605), (539, 36639955), (605, 32642869), (671, 29432095), (737, 26796385), (815, 24231823), (847, 23316335), (1141, 17308445), (1793, 11014465), (2135, 9250087), (2345, 8421721), (2695, 7327991), (2989, 6607205), (3283, 6015515), (3355, 5886419), (3685, 5359277), (4087, 4832135), (4235, 4663267), (4697, 4204585), (5159, 3828055), (5705, 3461689), (5929, 3330905), (7381, 2675645), (7987, 2472635), (8107, 2436035), (8965, 2202893), (9943, 1986215), (10921, 1808345), (12551, 1573495), (14945, 1321441), (16415, 1203103), (19723, 1001315), (20435, 966427), (23485, 840917), (25795, 765611), (28609, 690305), (29645, 666181), (32879, 600655), (36113, 546865), (36905, 535129), (39935, 494527), (40535, 487207), (44957, 439285), (49715, 397243), (51667, 382235), (54605, 361669), (56749, 348005), (62755, 314699), (69601, 283745), (76447, 258335), (87857, 224785), (98615, 200263), (109373, 180565), (120131, 164395), (138061, 143045)]