81120480

素因数分解:

$2^5\times 3^1\times 5^1\times 7^2\times {\mathrm{3449}}^1$

素因数の和:3481

約数の個数: 144

約数和(自身を含む): 297334800

約数和(自身を除く): 216214320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 49, 56, 60, 70, 80, 84, 96, 98, 105, 112, 120, 140, 147, 160, 168, 196, 210, 224, 240, 245, 280, 294, 336, 392, 420, 480, 490, 560, 588, 672, 735, 784, 840, 980, 1120, 1176, 1470, 1568, 1680, 1960, 2352, 2940, 3360, 3449, 3920, 4704, 5880, 6898, 7840, 10347, 11760, 13796, 17245, 20694, 23520, 24143, 27592, 34490, 41388, 48286, 51735, 55184, 68980, 72429, 82776, 96572, 103470, 110368, 120715, 137960, 144858, 165552, 169001, 193144, 206940, 241430, 275920, 289716, 331104, 338002, 362145, 386288, 413880, 482860, 507003, 551840, 579432, 676004, 724290, 772576, 827760, 845005, 965720, 1014006, 1158864, 1352008, 1448580, 1655520, 1690010, 1931440, 2028012, 2317728, 2535015, 2704016, 2897160, 3380020, 3862880, 4056024, 5070030, 5408032, 5794320, 6760040, 8112048, 10140060, 11588640, 13520080, 16224096, 20280120, 27040160, 40560240, 81120480]

約数ペア:

[(1, 81120480), (2, 40560240), (3, 27040160), (4, 20280120), (5, 16224096), (6, 13520080), (7, 11588640), (8, 10140060), (10, 8112048), (12, 6760040), (14, 5794320), (15, 5408032), (16, 5070030), (20, 4056024), (21, 3862880), (24, 3380020), (28, 2897160), (30, 2704016), (32, 2535015), (35, 2317728), (40, 2028012), (42, 1931440), (48, 1690010), (49, 1655520), (56, 1448580), (60, 1352008), (70, 1158864), (80, 1014006), (84, 965720), (96, 845005), (98, 827760), (105, 772576), (112, 724290), (120, 676004), (140, 579432), (147, 551840), (160, 507003), (168, 482860), (196, 413880), (210, 386288), (224, 362145), (240, 338002), (245, 331104), (280, 289716), (294, 275920), (336, 241430), (392, 206940), (420, 193144), (480, 169001), (490, 165552), (560, 144858), (588, 137960), (672, 120715), (735, 110368), (784, 103470), (840, 96572), (980, 82776), (1120, 72429), (1176, 68980), (1470, 55184), (1568, 51735), (1680, 48286), (1960, 41388), (2352, 34490), (2940, 27592), (3360, 24143), (3449, 23520), (3920, 20694), (4704, 17245), (5880, 13796), (6898, 11760), (7840, 10347)]