81047680

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{229}}^1$

素因数の和:334

約数の個数: 128

約数和(自身を含む): 225216000

約数和(自身を除く): 144168320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 79, 80, 112, 128, 140, 158, 160, 224, 229, 280, 316, 320, 395, 448, 458, 553, 560, 632, 640, 790, 896, 916, 1106, 1120, 1145, 1264, 1580, 1603, 1832, 2212, 2240, 2290, 2528, 2765, 3160, 3206, 3664, 4424, 4480, 4580, 5056, 5530, 6320, 6412, 7328, 8015, 8848, 9160, 10112, 11060, 12640, 12824, 14656, 16030, 17696, 18091, 18320, 22120, 25280, 25648, 29312, 32060, 35392, 36182, 36640, 44240, 50560, 51296, 64120, 70784, 72364, 73280, 88480, 90455, 102592, 126637, 128240, 144728, 146560, 176960, 180910, 205184, 253274, 256480, 289456, 353920, 361820, 506548, 512960, 578912, 633185, 723640, 1013096, 1025920, 1157824, 1266370, 1447280, 2026192, 2315648, 2532740, 2894560, 4052384, 5065480, 5789120, 8104768, 10130960, 11578240, 16209536, 20261920, 40523840, 81047680]

約数ペア:

[(1, 81047680), (2, 40523840), (4, 20261920), (5, 16209536), (7, 11578240), (8, 10130960), (10, 8104768), (14, 5789120), (16, 5065480), (20, 4052384), (28, 2894560), (32, 2532740), (35, 2315648), (40, 2026192), (56, 1447280), (64, 1266370), (70, 1157824), (79, 1025920), (80, 1013096), (112, 723640), (128, 633185), (140, 578912), (158, 512960), (160, 506548), (224, 361820), (229, 353920), (280, 289456), (316, 256480), (320, 253274), (395, 205184), (448, 180910), (458, 176960), (553, 146560), (560, 144728), (632, 128240), (640, 126637), (790, 102592), (896, 90455), (916, 88480), (1106, 73280), (1120, 72364), (1145, 70784), (1264, 64120), (1580, 51296), (1603, 50560), (1832, 44240), (2212, 36640), (2240, 36182), (2290, 35392), (2528, 32060), (2765, 29312), (3160, 25648), (3206, 25280), (3664, 22120), (4424, 18320), (4480, 18091), (4580, 17696), (5056, 16030), (5530, 14656), (6320, 12824), (6412, 12640), (7328, 11060), (8015, 10112), (8848, 9160)]