28199080

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:219

約数の個数: 128

約数和(自身を含む): 79994880

約数和(自身を除く): 51795800

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 61, 65, 70, 91, 104, 122, 127, 130, 140, 182, 244, 254, 260, 280, 305, 364, 427, 455, 488, 508, 520, 610, 635, 728, 793, 854, 889, 910, 1016, 1220, 1270, 1586, 1651, 1708, 1778, 1820, 2135, 2440, 2540, 3172, 3302, 3416, 3556, 3640, 3965, 4270, 4445, 5080, 5551, 6344, 6604, 7112, 7747, 7930, 8255, 8540, 8890, 11102, 11557, 13208, 15494, 15860, 16510, 17080, 17780, 22204, 23114, 27755, 30988, 31720, 33020, 35560, 38735, 44408, 46228, 54229, 55510, 57785, 61976, 66040, 77470, 92456, 100711, 108458, 111020, 115570, 154940, 201422, 216916, 222040, 231140, 271145, 309880, 402844, 433832, 462280, 503555, 542290, 704977, 805688, 1007110, 1084580, 1409954, 2014220, 2169160, 2819908, 3524885, 4028440, 5639816, 7049770, 14099540, 28199080]

約数ペア:

[(1, 28199080), (2, 14099540), (4, 7049770), (5, 5639816), (7, 4028440), (8, 3524885), (10, 2819908), (13, 2169160), (14, 2014220), (20, 1409954), (26, 1084580), (28, 1007110), (35, 805688), (40, 704977), (52, 542290), (56, 503555), (61, 462280), (65, 433832), (70, 402844), (91, 309880), (104, 271145), (122, 231140), (127, 222040), (130, 216916), (140, 201422), (182, 154940), (244, 115570), (254, 111020), (260, 108458), (280, 100711), (305, 92456), (364, 77470), (427, 66040), (455, 61976), (488, 57785), (508, 55510), (520, 54229), (610, 46228), (635, 44408), (728, 38735), (793, 35560), (854, 33020), (889, 31720), (910, 30988), (1016, 27755), (1220, 23114), (1270, 22204), (1586, 17780), (1651, 17080), (1708, 16510), (1778, 15860), (1820, 15494), (2135, 13208), (2440, 11557), (2540, 11102), (3172, 8890), (3302, 8540), (3416, 8255), (3556, 7930), (3640, 7747), (3965, 7112), (4270, 6604), (4445, 6344), (5080, 5551)]