20918160

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1709}}^1$

素因数の和:1745

約数の個数: 120

約数和(自身を含む): 74426040

約数和(自身を除く): 53507880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 34, 36, 40, 45, 48, 51, 60, 68, 72, 80, 85, 90, 102, 120, 136, 144, 153, 170, 180, 204, 240, 255, 272, 306, 340, 360, 408, 510, 612, 680, 720, 765, 816, 1020, 1224, 1360, 1530, 1709, 2040, 2448, 3060, 3418, 4080, 5127, 6120, 6836, 8545, 10254, 12240, 13672, 15381, 17090, 20508, 25635, 27344, 29053, 30762, 34180, 41016, 51270, 58106, 61524, 68360, 76905, 82032, 87159, 102540, 116212, 123048, 136720, 145265, 153810, 174318, 205080, 232424, 246096, 261477, 290530, 307620, 348636, 410160, 435795, 464848, 522954, 581060, 615240, 697272, 871590, 1045908, 1162120, 1230480, 1307385, 1394544, 1743180, 2091816, 2324240, 2614770, 3486360, 4183632, 5229540, 6972720, 10459080, 20918160]

約数ペア:

[(1, 20918160), (2, 10459080), (3, 6972720), (4, 5229540), (5, 4183632), (6, 3486360), (8, 2614770), (9, 2324240), (10, 2091816), (12, 1743180), (15, 1394544), (16, 1307385), (17, 1230480), (18, 1162120), (20, 1045908), (24, 871590), (30, 697272), (34, 615240), (36, 581060), (40, 522954), (45, 464848), (48, 435795), (51, 410160), (60, 348636), (68, 307620), (72, 290530), (80, 261477), (85, 246096), (90, 232424), (102, 205080), (120, 174318), (136, 153810), (144, 145265), (153, 136720), (170, 123048), (180, 116212), (204, 102540), (240, 87159), (255, 82032), (272, 76905), (306, 68360), (340, 61524), (360, 58106), (408, 51270), (510, 41016), (612, 34180), (680, 30762), (720, 29053), (765, 27344), (816, 25635), (1020, 20508), (1224, 17090), (1360, 15381), (1530, 13672), (1709, 12240), (2040, 10254), (2448, 8545), (3060, 6836), (3418, 6120), (4080, 5127)]