18779280

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{463}}^1$

素因数の和:505

約数の個数: 120

約数和(自身を含む): 63174528

約数和(自身を除く): 44395248

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 169, 195, 208, 240, 260, 312, 338, 390, 463, 507, 520, 624, 676, 780, 845, 926, 1014, 1040, 1352, 1389, 1560, 1690, 1852, 2028, 2315, 2535, 2704, 2778, 3120, 3380, 3704, 4056, 4630, 5070, 5556, 6019, 6760, 6945, 7408, 8112, 9260, 10140, 11112, 12038, 13520, 13890, 18057, 18520, 20280, 22224, 24076, 27780, 30095, 36114, 37040, 40560, 48152, 55560, 60190, 72228, 78247, 90285, 96304, 111120, 120380, 144456, 156494, 180570, 234741, 240760, 288912, 312988, 361140, 391235, 469482, 481520, 625976, 722280, 782470, 938964, 1173705, 1251952, 1444560, 1564940, 1877928, 2347410, 3129880, 3755856, 4694820, 6259760, 9389640, 18779280]

約数ペア:

[(1, 18779280), (2, 9389640), (3, 6259760), (4, 4694820), (5, 3755856), (6, 3129880), (8, 2347410), (10, 1877928), (12, 1564940), (13, 1444560), (15, 1251952), (16, 1173705), (20, 938964), (24, 782470), (26, 722280), (30, 625976), (39, 481520), (40, 469482), (48, 391235), (52, 361140), (60, 312988), (65, 288912), (78, 240760), (80, 234741), (104, 180570), (120, 156494), (130, 144456), (156, 120380), (169, 111120), (195, 96304), (208, 90285), (240, 78247), (260, 72228), (312, 60190), (338, 55560), (390, 48152), (463, 40560), (507, 37040), (520, 36114), (624, 30095), (676, 27780), (780, 24076), (845, 22224), (926, 20280), (1014, 18520), (1040, 18057), (1352, 13890), (1389, 13520), (1560, 12038), (1690, 11112), (1852, 10140), (2028, 9260), (2315, 8112), (2535, 7408), (2704, 6945), (2778, 6760), (3120, 6019), (3380, 5556), (3704, 5070), (4056, 4630)]