28981080

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{223}}^1$

素因数の和:278

約数の個数: 144

約数和(自身を含む): 99852480

約数和(自身を除く): 70871400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 19, 20, 24, 30, 36, 38, 40, 45, 57, 60, 72, 76, 90, 95, 114, 120, 152, 171, 180, 190, 223, 228, 285, 342, 360, 361, 380, 446, 456, 570, 669, 684, 722, 760, 855, 892, 1083, 1115, 1140, 1338, 1368, 1444, 1710, 1784, 1805, 2007, 2166, 2230, 2280, 2676, 2888, 3249, 3345, 3420, 3610, 4014, 4237, 4332, 4460, 5352, 5415, 6498, 6690, 6840, 7220, 8028, 8474, 8664, 8920, 10035, 10830, 12711, 12996, 13380, 14440, 16056, 16245, 16948, 20070, 21185, 21660, 25422, 25992, 26760, 32490, 33896, 38133, 40140, 42370, 43320, 50844, 63555, 64980, 76266, 80280, 80503, 84740, 101688, 127110, 129960, 152532, 161006, 169480, 190665, 241509, 254220, 305064, 322012, 381330, 402515, 483018, 508440, 644024, 724527, 762660, 805030, 966036, 1207545, 1449054, 1525320, 1610060, 1932072, 2415090, 2898108, 3220120, 3622635, 4830180, 5796216, 7245270, 9660360, 14490540, 28981080]

約数ペア:

[(1, 28981080), (2, 14490540), (3, 9660360), (4, 7245270), (5, 5796216), (6, 4830180), (8, 3622635), (9, 3220120), (10, 2898108), (12, 2415090), (15, 1932072), (18, 1610060), (19, 1525320), (20, 1449054), (24, 1207545), (30, 966036), (36, 805030), (38, 762660), (40, 724527), (45, 644024), (57, 508440), (60, 483018), (72, 402515), (76, 381330), (90, 322012), (95, 305064), (114, 254220), (120, 241509), (152, 190665), (171, 169480), (180, 161006), (190, 152532), (223, 129960), (228, 127110), (285, 101688), (342, 84740), (360, 80503), (361, 80280), (380, 76266), (446, 64980), (456, 63555), (570, 50844), (669, 43320), (684, 42370), (722, 40140), (760, 38133), (855, 33896), (892, 32490), (1083, 26760), (1115, 25992), (1140, 25422), (1338, 21660), (1368, 21185), (1444, 20070), (1710, 16948), (1784, 16245), (1805, 16056), (2007, 14440), (2166, 13380), (2230, 12996), (2280, 12711), (2676, 10830), (2888, 10035), (3249, 8920), (3345, 8664), (3420, 8474), (3610, 8028), (4014, 7220), (4237, 6840), (4332, 6690), (4460, 6498), (5352, 5415)]