21494511480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{320431}}^1$

素因数の和:320501

約数の個数: 128

約数和(自身を含む): 71059000320

約数和(自身を除く): 49564488840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 43, 52, 60, 65, 78, 86, 104, 120, 129, 130, 156, 172, 195, 215, 258, 260, 312, 344, 390, 430, 516, 520, 559, 645, 780, 860, 1032, 1118, 1290, 1560, 1677, 1720, 2236, 2580, 2795, 3354, 4472, 5160, 5590, 6708, 8385, 11180, 13416, 16770, 22360, 33540, 67080, 320431, 640862, 961293, 1281724, 1602155, 1922586, 2563448, 3204310, 3845172, 4165603, 4806465, 6408620, 7690344, 8331206, 9612930, 12496809, 12817240, 13778533, 16662412, 19225860, 20828015, 24993618, 27557066, 33324824, 38451720, 41335599, 41656030, 49987236, 55114132, 62484045, 68892665, 82671198, 83312060, 99974472, 110228264, 124968090, 137785330, 165342396, 166624120, 179120929, 206677995, 249936180, 275570660, 330684792, 358241858, 413355990, 499872360, 537362787, 551141320, 716483716, 826711980, 895604645, 1074725574, 1432967432, 1653423960, 1791209290, 2149451148, 2686813935, 3582418580, 4298902296, 5373627870, 7164837160, 10747255740, 21494511480]

約数ペア:

[(1, 21494511480), (2, 10747255740), (3, 7164837160), (4, 5373627870), (5, 4298902296), (6, 3582418580), (8, 2686813935), (10, 2149451148), (12, 1791209290), (13, 1653423960), (15, 1432967432), (20, 1074725574), (24, 895604645), (26, 826711980), (30, 716483716), (39, 551141320), (40, 537362787), (43, 499872360), (52, 413355990), (60, 358241858), (65, 330684792), (78, 275570660), (86, 249936180), (104, 206677995), (120, 179120929), (129, 166624120), (130, 165342396), (156, 137785330), (172, 124968090), (195, 110228264), (215, 99974472), (258, 83312060), (260, 82671198), (312, 68892665), (344, 62484045), (390, 55114132), (430, 49987236), (516, 41656030), (520, 41335599), (559, 38451720), (645, 33324824), (780, 27557066), (860, 24993618), (1032, 20828015), (1118, 19225860), (1290, 16662412), (1560, 13778533), (1677, 12817240), (1720, 12496809), (2236, 9612930), (2580, 8331206), (2795, 7690344), (3354, 6408620), (4472, 4806465), (5160, 4165603), (5590, 3845172), (6708, 3204310), (8385, 2563448), (11180, 1922586), (13416, 1602155), (16770, 1281724), (22360, 961293), (33540, 640862), (67080, 320431)]