21563880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{601}}^1$

素因数の和:651

約数の個数: 128

約数和(自身を含む): 72817920

約数和(自身を除く): 51254040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 23, 24, 26, 30, 39, 40, 46, 52, 60, 65, 69, 78, 92, 104, 115, 120, 130, 138, 156, 184, 195, 230, 260, 276, 299, 312, 345, 390, 460, 520, 552, 598, 601, 690, 780, 897, 920, 1196, 1202, 1380, 1495, 1560, 1794, 1803, 2392, 2404, 2760, 2990, 3005, 3588, 3606, 4485, 4808, 5980, 6010, 7176, 7212, 7813, 8970, 9015, 11960, 12020, 13823, 14424, 15626, 17940, 18030, 23439, 24040, 27646, 31252, 35880, 36060, 39065, 41469, 46878, 55292, 62504, 69115, 72120, 78130, 82938, 93756, 110584, 117195, 138230, 156260, 165876, 179699, 187512, 207345, 234390, 276460, 312520, 331752, 359398, 414690, 468780, 539097, 552920, 718796, 829380, 898495, 937560, 1078194, 1437592, 1658760, 1796990, 2156388, 2695485, 3593980, 4312776, 5390970, 7187960, 10781940, 21563880]

約数ペア:

[(1, 21563880), (2, 10781940), (3, 7187960), (4, 5390970), (5, 4312776), (6, 3593980), (8, 2695485), (10, 2156388), (12, 1796990), (13, 1658760), (15, 1437592), (20, 1078194), (23, 937560), (24, 898495), (26, 829380), (30, 718796), (39, 552920), (40, 539097), (46, 468780), (52, 414690), (60, 359398), (65, 331752), (69, 312520), (78, 276460), (92, 234390), (104, 207345), (115, 187512), (120, 179699), (130, 165876), (138, 156260), (156, 138230), (184, 117195), (195, 110584), (230, 93756), (260, 82938), (276, 78130), (299, 72120), (312, 69115), (345, 62504), (390, 55292), (460, 46878), (520, 41469), (552, 39065), (598, 36060), (601, 35880), (690, 31252), (780, 27646), (897, 24040), (920, 23439), (1196, 18030), (1202, 17940), (1380, 15626), (1495, 14424), (1560, 13823), (1794, 12020), (1803, 11960), (2392, 9015), (2404, 8970), (2760, 7813), (2990, 7212), (3005, 7176), (3588, 6010), (3606, 5980), (4485, 4808)]