21391380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5167}}^1$

素因数の和:5205

約数の個数: 72

約数和(自身を含む): 67721472

約数和(自身を除く): 46330092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 5167, 10334, 15501, 20668, 25835, 31002, 46503, 51670, 62004, 77505, 93006, 103340, 118841, 155010, 186012, 232515, 237682, 310020, 356523, 465030, 475364, 594205, 713046, 930060, 1069569, 1188410, 1426092, 1782615, 2139138, 2376820, 3565230, 4278276, 5347845, 7130460, 10695690, 21391380]

約数ペア:

[(1, 21391380), (2, 10695690), (3, 7130460), (4, 5347845), (5, 4278276), (6, 3565230), (9, 2376820), (10, 2139138), (12, 1782615), (15, 1426092), (18, 1188410), (20, 1069569), (23, 930060), (30, 713046), (36, 594205), (45, 475364), (46, 465030), (60, 356523), (69, 310020), (90, 237682), (92, 232515), (115, 186012), (138, 155010), (180, 118841), (207, 103340), (230, 93006), (276, 77505), (345, 62004), (414, 51670), (460, 46503), (690, 31002), (828, 25835), (1035, 20668), (1380, 15501), (2070, 10334), (4140, 5167)]