25321840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:506

約数の個数: 80

約数和(自身を含む): 63933408

約数和(自身を除く): 38611568

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 43, 68, 80, 85, 86, 136, 170, 172, 215, 272, 340, 344, 430, 433, 680, 688, 731, 860, 866, 1360, 1462, 1720, 1732, 2165, 2924, 3440, 3464, 3655, 4330, 5848, 6928, 7310, 7361, 8660, 11696, 14620, 14722, 17320, 18619, 29240, 29444, 34640, 36805, 37238, 58480, 58888, 73610, 74476, 93095, 117776, 147220, 148952, 186190, 294440, 297904, 316523, 372380, 588880, 633046, 744760, 1266092, 1489520, 1582615, 2532184, 3165230, 5064368, 6330460, 12660920, 25321840]

約数ペア:

[(1, 25321840), (2, 12660920), (4, 6330460), (5, 5064368), (8, 3165230), (10, 2532184), (16, 1582615), (17, 1489520), (20, 1266092), (34, 744760), (40, 633046), (43, 588880), (68, 372380), (80, 316523), (85, 297904), (86, 294440), (136, 186190), (170, 148952), (172, 147220), (215, 117776), (272, 93095), (340, 74476), (344, 73610), (430, 58888), (433, 58480), (680, 37238), (688, 36805), (731, 34640), (860, 29444), (866, 29240), (1360, 18619), (1462, 17320), (1720, 14722), (1732, 14620), (2165, 11696), (2924, 8660), (3440, 7361), (3464, 7310), (3655, 6928), (4330, 5848)]