28981680

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1327}}^1$

素因数の和:1363

約数の個数: 160

約数和(自身を含む): 110659584

約数和(自身を除く): 81677904

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 16, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 48, 52, 56, 60, 65, 70, 78, 80, 84, 91, 104, 105, 112, 120, 130, 140, 156, 168, 182, 195, 208, 210, 240, 260, 273, 280, 312, 336, 364, 390, 420, 455, 520, 546, 560, 624, 728, 780, 840, 910, 1040, 1092, 1327, 1365, 1456, 1560, 1680, 1820, 2184, 2654, 2730, 3120, 3640, 3981, 4368, 5308, 5460, 6635, 7280, 7962, 9289, 10616, 10920, 13270, 15924, 17251, 18578, 19905, 21232, 21840, 26540, 27867, 31848, 34502, 37156, 39810, 46445, 51753, 53080, 55734, 63696, 69004, 74312, 79620, 86255, 92890, 103506, 106160, 111468, 120757, 138008, 139335, 148624, 159240, 172510, 185780, 207012, 222936, 241514, 258765, 276016, 278670, 318480, 345020, 362271, 371560, 414024, 445872, 483028, 517530, 557340, 603785, 690040, 724542, 743120, 828048, 966056, 1035060, 1114680, 1207570, 1380080, 1449084, 1811355, 1932112, 2070120, 2229360, 2415140, 2898168, 3622710, 4140240, 4830280, 5796336, 7245420, 9660560, 14490840, 28981680]

約数ペア:

[(1, 28981680), (2, 14490840), (3, 9660560), (4, 7245420), (5, 5796336), (6, 4830280), (7, 4140240), (8, 3622710), (10, 2898168), (12, 2415140), (13, 2229360), (14, 2070120), (15, 1932112), (16, 1811355), (20, 1449084), (21, 1380080), (24, 1207570), (26, 1114680), (28, 1035060), (30, 966056), (35, 828048), (39, 743120), (40, 724542), (42, 690040), (48, 603785), (52, 557340), (56, 517530), (60, 483028), (65, 445872), (70, 414024), (78, 371560), (80, 362271), (84, 345020), (91, 318480), (104, 278670), (105, 276016), (112, 258765), (120, 241514), (130, 222936), (140, 207012), (156, 185780), (168, 172510), (182, 159240), (195, 148624), (208, 139335), (210, 138008), (240, 120757), (260, 111468), (273, 106160), (280, 103506), (312, 92890), (336, 86255), (364, 79620), (390, 74312), (420, 69004), (455, 63696), (520, 55734), (546, 53080), (560, 51753), (624, 46445), (728, 39810), (780, 37156), (840, 34502), (910, 31848), (1040, 27867), (1092, 26540), (1327, 21840), (1365, 21232), (1456, 19905), (1560, 18578), (1680, 17251), (1820, 15924), (2184, 13270), (2654, 10920), (2730, 10616), (3120, 9289), (3640, 7962), (3981, 7280), (4368, 6635), (5308, 5460)]