21686220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{373}}^1$

素因数の和:424

約数の個数: 144

約数和(自身を含む): 73513440

約数和(自身を除く): 51827220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 19, 20, 30, 34, 36, 38, 45, 51, 57, 60, 68, 76, 85, 90, 95, 102, 114, 153, 170, 171, 180, 190, 204, 228, 255, 285, 306, 323, 340, 342, 373, 380, 510, 570, 612, 646, 684, 746, 765, 855, 969, 1020, 1119, 1140, 1292, 1492, 1530, 1615, 1710, 1865, 1938, 2238, 2907, 3060, 3230, 3357, 3420, 3730, 3876, 4476, 4845, 5595, 5814, 6341, 6460, 6714, 7087, 7460, 9690, 11190, 11628, 12682, 13428, 14174, 14535, 16785, 19023, 19380, 21261, 22380, 25364, 28348, 29070, 31705, 33570, 35435, 38046, 42522, 57069, 58140, 63410, 63783, 67140, 70870, 76092, 85044, 95115, 106305, 114138, 120479, 126820, 127566, 141740, 190230, 212610, 228276, 240958, 255132, 285345, 318915, 361437, 380460, 425220, 481916, 570690, 602395, 637830, 722874, 1084311, 1141380, 1204790, 1275660, 1445748, 1807185, 2168622, 2409580, 3614370, 4337244, 5421555, 7228740, 10843110, 21686220]

約数ペア:

[(1, 21686220), (2, 10843110), (3, 7228740), (4, 5421555), (5, 4337244), (6, 3614370), (9, 2409580), (10, 2168622), (12, 1807185), (15, 1445748), (17, 1275660), (18, 1204790), (19, 1141380), (20, 1084311), (30, 722874), (34, 637830), (36, 602395), (38, 570690), (45, 481916), (51, 425220), (57, 380460), (60, 361437), (68, 318915), (76, 285345), (85, 255132), (90, 240958), (95, 228276), (102, 212610), (114, 190230), (153, 141740), (170, 127566), (171, 126820), (180, 120479), (190, 114138), (204, 106305), (228, 95115), (255, 85044), (285, 76092), (306, 70870), (323, 67140), (340, 63783), (342, 63410), (373, 58140), (380, 57069), (510, 42522), (570, 38046), (612, 35435), (646, 33570), (684, 31705), (746, 29070), (765, 28348), (855, 25364), (969, 22380), (1020, 21261), (1119, 19380), (1140, 19023), (1292, 16785), (1492, 14535), (1530, 14174), (1615, 13428), (1710, 12682), (1865, 11628), (1938, 11190), (2238, 9690), (2907, 7460), (3060, 7087), (3230, 6714), (3357, 6460), (3420, 6341), (3730, 5814), (3876, 5595), (4476, 4845)]