16721520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{193}}^1$

素因数の和:247

約数の個数: 120

約数和(自身を含む): 54992016

約数和(自身を除く): 38270496

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 38, 40, 48, 57, 60, 76, 80, 95, 114, 120, 152, 190, 193, 228, 240, 285, 304, 361, 380, 386, 456, 570, 579, 722, 760, 772, 912, 965, 1083, 1140, 1158, 1444, 1520, 1544, 1805, 1930, 2166, 2280, 2316, 2888, 2895, 3088, 3610, 3667, 3860, 4332, 4560, 4632, 5415, 5776, 5790, 7220, 7334, 7720, 8664, 9264, 10830, 11001, 11580, 14440, 14668, 15440, 17328, 18335, 21660, 22002, 23160, 28880, 29336, 36670, 43320, 44004, 46320, 55005, 58672, 69673, 73340, 86640, 88008, 110010, 139346, 146680, 176016, 209019, 220020, 278692, 293360, 348365, 418038, 440040, 557384, 696730, 836076, 880080, 1045095, 1114768, 1393460, 1672152, 2090190, 2786920, 3344304, 4180380, 5573840, 8360760, 16721520]

約数ペア:

[(1, 16721520), (2, 8360760), (3, 5573840), (4, 4180380), (5, 3344304), (6, 2786920), (8, 2090190), (10, 1672152), (12, 1393460), (15, 1114768), (16, 1045095), (19, 880080), (20, 836076), (24, 696730), (30, 557384), (38, 440040), (40, 418038), (48, 348365), (57, 293360), (60, 278692), (76, 220020), (80, 209019), (95, 176016), (114, 146680), (120, 139346), (152, 110010), (190, 88008), (193, 86640), (228, 73340), (240, 69673), (285, 58672), (304, 55005), (361, 46320), (380, 44004), (386, 43320), (456, 36670), (570, 29336), (579, 28880), (722, 23160), (760, 22002), (772, 21660), (912, 18335), (965, 17328), (1083, 15440), (1140, 14668), (1158, 14440), (1444, 11580), (1520, 11001), (1544, 10830), (1805, 9264), (1930, 8664), (2166, 7720), (2280, 7334), (2316, 7220), (2888, 5790), (2895, 5776), (3088, 5415), (3610, 4632), (3667, 4560), (3860, 4332)]