12990720

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:240

約数の個数: 144

約数和(自身を含む): 44150400

約数和(自身を除く): 31159680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 128, 136, 160, 170, 192, 199, 204, 240, 255, 256, 272, 320, 340, 384, 398, 408, 480, 510, 544, 597, 640, 680, 768, 796, 816, 960, 995, 1020, 1088, 1194, 1280, 1360, 1592, 1632, 1920, 1990, 2040, 2176, 2388, 2720, 2985, 3184, 3264, 3383, 3840, 3980, 4080, 4352, 4776, 5440, 5970, 6368, 6528, 6766, 7960, 8160, 9552, 10149, 10880, 11940, 12736, 13056, 13532, 15920, 16320, 16915, 19104, 20298, 21760, 23880, 25472, 27064, 31840, 32640, 33830, 38208, 40596, 47760, 50745, 50944, 54128, 63680, 65280, 67660, 76416, 81192, 95520, 101490, 108256, 127360, 135320, 152832, 162384, 191040, 202980, 216512, 254720, 270640, 324768, 382080, 405960, 433024, 541280, 649536, 764160, 811920, 866048, 1082560, 1299072, 1623840, 2165120, 2598144, 3247680, 4330240, 6495360, 12990720]

約数ペア:

[(1, 12990720), (2, 6495360), (3, 4330240), (4, 3247680), (5, 2598144), (6, 2165120), (8, 1623840), (10, 1299072), (12, 1082560), (15, 866048), (16, 811920), (17, 764160), (20, 649536), (24, 541280), (30, 433024), (32, 405960), (34, 382080), (40, 324768), (48, 270640), (51, 254720), (60, 216512), (64, 202980), (68, 191040), (80, 162384), (85, 152832), (96, 135320), (102, 127360), (120, 108256), (128, 101490), (136, 95520), (160, 81192), (170, 76416), (192, 67660), (199, 65280), (204, 63680), (240, 54128), (255, 50944), (256, 50745), (272, 47760), (320, 40596), (340, 38208), (384, 33830), (398, 32640), (408, 31840), (480, 27064), (510, 25472), (544, 23880), (597, 21760), (640, 20298), (680, 19104), (768, 16915), (796, 16320), (816, 15920), (960, 13532), (995, 13056), (1020, 12736), (1088, 11940), (1194, 10880), (1280, 10149), (1360, 9552), (1592, 8160), (1632, 7960), (1920, 6766), (1990, 6528), (2040, 6368), (2176, 5970), (2388, 5440), (2720, 4776), (2985, 4352), (3184, 4080), (3264, 3980), (3383, 3840)]