21578480

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:175

約数の個数: 160

約数和(自身を含む): 65138688

約数和(自身を除く): 43560208

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 28, 31, 35, 40, 44, 55, 56, 62, 70, 77, 80, 88, 110, 112, 113, 124, 140, 154, 155, 176, 217, 220, 226, 248, 280, 308, 310, 341, 385, 434, 440, 452, 496, 560, 565, 616, 620, 682, 770, 791, 868, 880, 904, 1085, 1130, 1232, 1240, 1243, 1364, 1540, 1582, 1705, 1736, 1808, 2170, 2260, 2387, 2480, 2486, 2728, 3080, 3164, 3410, 3472, 3503, 3955, 4340, 4520, 4774, 4972, 5456, 6160, 6215, 6328, 6820, 7006, 7910, 8680, 8701, 9040, 9548, 9944, 11935, 12430, 12656, 13640, 14012, 15820, 17360, 17402, 17515, 19096, 19888, 23870, 24521, 24860, 27280, 28024, 31640, 34804, 35030, 38192, 38533, 43505, 47740, 49042, 49720, 56048, 63280, 69608, 70060, 77066, 87010, 95480, 98084, 99440, 122605, 139216, 140120, 154132, 174020, 190960, 192665, 196168, 245210, 269731, 280240, 308264, 348040, 385330, 392336, 490420, 539462, 616528, 696080, 770660, 980840, 1078924, 1348655, 1541320, 1961680, 2157848, 2697310, 3082640, 4315696, 5394620, 10789240, 21578480]

約数ペア:

[(1, 21578480), (2, 10789240), (4, 5394620), (5, 4315696), (7, 3082640), (8, 2697310), (10, 2157848), (11, 1961680), (14, 1541320), (16, 1348655), (20, 1078924), (22, 980840), (28, 770660), (31, 696080), (35, 616528), (40, 539462), (44, 490420), (55, 392336), (56, 385330), (62, 348040), (70, 308264), (77, 280240), (80, 269731), (88, 245210), (110, 196168), (112, 192665), (113, 190960), (124, 174020), (140, 154132), (154, 140120), (155, 139216), (176, 122605), (217, 99440), (220, 98084), (226, 95480), (248, 87010), (280, 77066), (308, 70060), (310, 69608), (341, 63280), (385, 56048), (434, 49720), (440, 49042), (452, 47740), (496, 43505), (560, 38533), (565, 38192), (616, 35030), (620, 34804), (682, 31640), (770, 28024), (791, 27280), (868, 24860), (880, 24521), (904, 23870), (1085, 19888), (1130, 19096), (1232, 17515), (1240, 17402), (1243, 17360), (1364, 15820), (1540, 14012), (1582, 13640), (1705, 12656), (1736, 12430), (1808, 11935), (2170, 9944), (2260, 9548), (2387, 9040), (2480, 8701), (2486, 8680), (2728, 7910), (3080, 7006), (3164, 6820), (3410, 6328), (3472, 6215), (3503, 6160), (3955, 5456), (4340, 4972), (4520, 4774)]