19981008

素因数分解:

$2^4\times 3^2\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1$

素因数の和:209

約数の個数: 120

約数和(自身を含む): 60288800

約数和(自身を除く): 40307792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 19, 24, 36, 38, 48, 57, 67, 72, 76, 109, 114, 134, 144, 152, 171, 201, 218, 228, 268, 304, 327, 342, 402, 436, 456, 536, 603, 654, 684, 804, 872, 912, 981, 1072, 1206, 1273, 1308, 1368, 1608, 1744, 1962, 2071, 2412, 2546, 2616, 2736, 3216, 3819, 3924, 4142, 4824, 5092, 5232, 6213, 7303, 7638, 7848, 8284, 9648, 10184, 11457, 12426, 14606, 15276, 15696, 16568, 18639, 20368, 21909, 22914, 24852, 29212, 30552, 33136, 37278, 43818, 45828, 49704, 58424, 61104, 65727, 74556, 87636, 91656, 99408, 116848, 131454, 138757, 149112, 175272, 183312, 262908, 277514, 298224, 350544, 416271, 525816, 555028, 832542, 1051632, 1110056, 1248813, 1665084, 2220112, 2497626, 3330168, 4995252, 6660336, 9990504, 19981008]

約数ペア:

[(1, 19981008), (2, 9990504), (3, 6660336), (4, 4995252), (6, 3330168), (8, 2497626), (9, 2220112), (12, 1665084), (16, 1248813), (18, 1110056), (19, 1051632), (24, 832542), (36, 555028), (38, 525816), (48, 416271), (57, 350544), (67, 298224), (72, 277514), (76, 262908), (109, 183312), (114, 175272), (134, 149112), (144, 138757), (152, 131454), (171, 116848), (201, 99408), (218, 91656), (228, 87636), (268, 74556), (304, 65727), (327, 61104), (342, 58424), (402, 49704), (436, 45828), (456, 43818), (536, 37278), (603, 33136), (654, 30552), (684, 29212), (804, 24852), (872, 22914), (912, 21909), (981, 20368), (1072, 18639), (1206, 16568), (1273, 15696), (1308, 15276), (1368, 14606), (1608, 12426), (1744, 11457), (1962, 10184), (2071, 9648), (2412, 8284), (2546, 7848), (2616, 7638), (2736, 7303), (3216, 6213), (3819, 5232), (3924, 5092), (4142, 4824)]