205459540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{199}}^1$

素因数の和:270

約数の個数: 144

約数和(自身を含む): 537667200

約数和(自身を除く): 332207660

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 38, 44, 52, 55, 65, 76, 95, 110, 130, 143, 190, 199, 209, 220, 247, 260, 286, 361, 380, 398, 418, 494, 572, 715, 722, 796, 836, 988, 995, 1045, 1235, 1430, 1444, 1805, 1990, 2090, 2189, 2470, 2587, 2717, 2860, 3610, 3781, 3971, 3980, 4180, 4378, 4693, 4940, 5174, 5434, 7220, 7562, 7942, 8756, 9386, 10348, 10868, 10945, 12935, 13585, 15124, 15884, 18772, 18905, 19855, 21890, 23465, 25870, 27170, 28457, 37810, 39710, 41591, 43780, 46930, 49153, 51623, 51740, 54340, 56914, 71839, 75620, 79420, 83182, 93860, 98306, 103246, 113828, 142285, 143678, 166364, 196612, 206492, 207955, 245765, 258115, 284570, 287356, 359195, 415910, 491530, 516230, 540683, 569140, 718390, 790229, 831820, 933907, 983060, 1032460, 1081366, 1436780, 1580458, 1867814, 2162732, 2703415, 3160916, 3735628, 3951145, 4669535, 5406830, 7902290, 9339070, 10272977, 10813660, 15804580, 18678140, 20545954, 41091908, 51364885, 102729770, 205459540]

約数ペア:

[(1, 205459540), (2, 102729770), (4, 51364885), (5, 41091908), (10, 20545954), (11, 18678140), (13, 15804580), (19, 10813660), (20, 10272977), (22, 9339070), (26, 7902290), (38, 5406830), (44, 4669535), (52, 3951145), (55, 3735628), (65, 3160916), (76, 2703415), (95, 2162732), (110, 1867814), (130, 1580458), (143, 1436780), (190, 1081366), (199, 1032460), (209, 983060), (220, 933907), (247, 831820), (260, 790229), (286, 718390), (361, 569140), (380, 540683), (398, 516230), (418, 491530), (494, 415910), (572, 359195), (715, 287356), (722, 284570), (796, 258115), (836, 245765), (988, 207955), (995, 206492), (1045, 196612), (1235, 166364), (1430, 143678), (1444, 142285), (1805, 113828), (1990, 103246), (2090, 98306), (2189, 93860), (2470, 83182), (2587, 79420), (2717, 75620), (2860, 71839), (3610, 56914), (3781, 54340), (3971, 51740), (3980, 51623), (4180, 49153), (4378, 46930), (4693, 43780), (4940, 41591), (5174, 39710), (5434, 37810), (7220, 28457), (7562, 27170), (7942, 25870), (8756, 23465), (9386, 21890), (10348, 19855), (10868, 18905), (10945, 18772), (12935, 15884), (13585, 15124)]