998123640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{421}}^1\times {\mathrm{859}}^1$

素因数の和:1317

約数の個数: 128

約数和(自身を含む): 3135628800

約数和(自身を除く): 2137505160

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 23, 24, 30, 40, 46, 60, 69, 92, 115, 120, 138, 184, 230, 276, 345, 421, 460, 552, 690, 842, 859, 920, 1263, 1380, 1684, 1718, 2105, 2526, 2577, 2760, 3368, 3436, 4210, 4295, 5052, 5154, 6315, 6872, 8420, 8590, 9683, 10104, 10308, 12630, 12885, 16840, 17180, 19366, 19757, 20616, 25260, 25770, 29049, 34360, 38732, 39514, 48415, 50520, 51540, 58098, 59271, 77464, 79028, 96830, 98785, 103080, 116196, 118542, 145245, 158056, 193660, 197570, 232392, 237084, 290490, 296355, 361639, 387320, 395140, 474168, 580980, 592710, 723278, 790280, 1084917, 1161960, 1185420, 1446556, 1808195, 2169834, 2370840, 2893112, 3616390, 4339668, 5424585, 7232780, 8317697, 8679336, 10849170, 14465560, 16635394, 21698340, 24953091, 33270788, 41588485, 43396680, 49906182, 66541576, 83176970, 99812364, 124765455, 166353940, 199624728, 249530910, 332707880, 499061820, 998123640]

約数ペア:

[(1, 998123640), (2, 499061820), (3, 332707880), (4, 249530910), (5, 199624728), (6, 166353940), (8, 124765455), (10, 99812364), (12, 83176970), (15, 66541576), (20, 49906182), (23, 43396680), (24, 41588485), (30, 33270788), (40, 24953091), (46, 21698340), (60, 16635394), (69, 14465560), (92, 10849170), (115, 8679336), (120, 8317697), (138, 7232780), (184, 5424585), (230, 4339668), (276, 3616390), (345, 2893112), (421, 2370840), (460, 2169834), (552, 1808195), (690, 1446556), (842, 1185420), (859, 1161960), (920, 1084917), (1263, 790280), (1380, 723278), (1684, 592710), (1718, 580980), (2105, 474168), (2526, 395140), (2577, 387320), (2760, 361639), (3368, 296355), (3436, 290490), (4210, 237084), (4295, 232392), (5052, 197570), (5154, 193660), (6315, 158056), (6872, 145245), (8420, 118542), (8590, 116196), (9683, 103080), (10104, 98785), (10308, 96830), (12630, 79028), (12885, 77464), (16840, 59271), (17180, 58098), (19366, 51540), (19757, 50520), (20616, 48415), (25260, 39514), (25770, 38732), (29049, 34360)]