19950660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{79}}^1$

素因数の和:178

約数の個数: 144

約数和(自身を含む): 64995840

約数和(自身を除く): 45045180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 61, 69, 79, 90, 92, 115, 122, 138, 158, 180, 183, 207, 230, 237, 244, 276, 305, 316, 345, 366, 395, 414, 460, 474, 549, 610, 690, 711, 732, 790, 828, 915, 948, 1035, 1098, 1185, 1220, 1380, 1403, 1422, 1580, 1817, 1830, 2070, 2196, 2370, 2745, 2806, 2844, 3555, 3634, 3660, 4140, 4209, 4740, 4819, 5451, 5490, 5612, 7015, 7110, 7268, 8418, 9085, 9638, 10902, 10980, 12627, 14030, 14220, 14457, 16353, 16836, 18170, 19276, 21045, 21804, 24095, 25254, 27255, 28060, 28914, 32706, 36340, 42090, 43371, 48190, 50508, 54510, 57828, 63135, 65412, 72285, 81765, 84180, 86742, 96380, 109020, 110837, 126270, 144570, 163530, 173484, 216855, 221674, 252540, 289140, 327060, 332511, 433710, 443348, 554185, 665022, 867420, 997533, 1108370, 1330044, 1662555, 1995066, 2216740, 3325110, 3990132, 4987665, 6650220, 9975330, 19950660]

約数ペア:

[(1, 19950660), (2, 9975330), (3, 6650220), (4, 4987665), (5, 3990132), (6, 3325110), (9, 2216740), (10, 1995066), (12, 1662555), (15, 1330044), (18, 1108370), (20, 997533), (23, 867420), (30, 665022), (36, 554185), (45, 443348), (46, 433710), (60, 332511), (61, 327060), (69, 289140), (79, 252540), (90, 221674), (92, 216855), (115, 173484), (122, 163530), (138, 144570), (158, 126270), (180, 110837), (183, 109020), (207, 96380), (230, 86742), (237, 84180), (244, 81765), (276, 72285), (305, 65412), (316, 63135), (345, 57828), (366, 54510), (395, 50508), (414, 48190), (460, 43371), (474, 42090), (549, 36340), (610, 32706), (690, 28914), (711, 28060), (732, 27255), (790, 25254), (828, 24095), (915, 21804), (948, 21045), (1035, 19276), (1098, 18170), (1185, 16836), (1220, 16353), (1380, 14457), (1403, 14220), (1422, 14030), (1580, 12627), (1817, 10980), (1830, 10902), (2070, 9638), (2196, 9085), (2370, 8418), (2745, 7268), (2806, 7110), (2844, 7015), (3555, 5612), (3634, 5490), (3660, 5451), (4140, 4819), (4209, 4740)]