21543760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1$

素因数の和:141

約数の個数: 160

約数和(自身を含む): 63424512

約数和(自身を除く): 41880752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 31, 34, 35, 40, 56, 62, 68, 70, 73, 80, 85, 112, 119, 124, 136, 140, 146, 155, 170, 217, 238, 248, 272, 280, 292, 310, 340, 365, 434, 476, 496, 511, 527, 560, 584, 595, 620, 680, 730, 868, 952, 1022, 1054, 1085, 1168, 1190, 1240, 1241, 1360, 1460, 1736, 1904, 2044, 2108, 2170, 2263, 2380, 2480, 2482, 2555, 2635, 2920, 3472, 3689, 4088, 4216, 4340, 4526, 4760, 4964, 5110, 5270, 5840, 6205, 7378, 8176, 8432, 8680, 8687, 9052, 9520, 9928, 10220, 10540, 11315, 12410, 14756, 15841, 17360, 17374, 18104, 18445, 19856, 20440, 21080, 22630, 24820, 29512, 31682, 34748, 36208, 36890, 38471, 40880, 42160, 43435, 45260, 49640, 59024, 63364, 69496, 73780, 76942, 79205, 86870, 90520, 99280, 126728, 138992, 147560, 153884, 158410, 173740, 181040, 192355, 253456, 269297, 295120, 307768, 316820, 347480, 384710, 538594, 615536, 633640, 694960, 769420, 1077188, 1267280, 1346485, 1538840, 2154376, 2692970, 3077680, 4308752, 5385940, 10771880, 21543760]

約数ペア:

[(1, 21543760), (2, 10771880), (4, 5385940), (5, 4308752), (7, 3077680), (8, 2692970), (10, 2154376), (14, 1538840), (16, 1346485), (17, 1267280), (20, 1077188), (28, 769420), (31, 694960), (34, 633640), (35, 615536), (40, 538594), (56, 384710), (62, 347480), (68, 316820), (70, 307768), (73, 295120), (80, 269297), (85, 253456), (112, 192355), (119, 181040), (124, 173740), (136, 158410), (140, 153884), (146, 147560), (155, 138992), (170, 126728), (217, 99280), (238, 90520), (248, 86870), (272, 79205), (280, 76942), (292, 73780), (310, 69496), (340, 63364), (365, 59024), (434, 49640), (476, 45260), (496, 43435), (511, 42160), (527, 40880), (560, 38471), (584, 36890), (595, 36208), (620, 34748), (680, 31682), (730, 29512), (868, 24820), (952, 22630), (1022, 21080), (1054, 20440), (1085, 19856), (1168, 18445), (1190, 18104), (1240, 17374), (1241, 17360), (1360, 15841), (1460, 14756), (1736, 12410), (1904, 11315), (2044, 10540), (2108, 10220), (2170, 9928), (2263, 9520), (2380, 9052), (2480, 8687), (2482, 8680), (2555, 8432), (2635, 8176), (2920, 7378), (3472, 6205), (3689, 5840), (4088, 5270), (4216, 5110), (4340, 4964), (4526, 4760)]