25561980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{509}}^1$

素因数の和:561

約数の個数: 120

約数和(自身を含む): 82938240

約数和(自身を除く): 57376260

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 31, 36, 45, 54, 60, 62, 81, 90, 93, 108, 124, 135, 155, 162, 180, 186, 270, 279, 310, 324, 372, 405, 465, 509, 540, 558, 620, 810, 837, 930, 1018, 1116, 1395, 1527, 1620, 1674, 1860, 2036, 2511, 2545, 2790, 3054, 3348, 4185, 4581, 5022, 5090, 5580, 6108, 7635, 8370, 9162, 10044, 10180, 12555, 13743, 15270, 15779, 16740, 18324, 22905, 25110, 27486, 30540, 31558, 41229, 45810, 47337, 50220, 54972, 63116, 68715, 78895, 82458, 91620, 94674, 137430, 142011, 157790, 164916, 189348, 206145, 236685, 274860, 284022, 315580, 412290, 426033, 473370, 568044, 710055, 824580, 852066, 946740, 1278099, 1420110, 1704132, 2130165, 2556198, 2840220, 4260330, 5112396, 6390495, 8520660, 12780990, 25561980]

約数ペア:

[(1, 25561980), (2, 12780990), (3, 8520660), (4, 6390495), (5, 5112396), (6, 4260330), (9, 2840220), (10, 2556198), (12, 2130165), (15, 1704132), (18, 1420110), (20, 1278099), (27, 946740), (30, 852066), (31, 824580), (36, 710055), (45, 568044), (54, 473370), (60, 426033), (62, 412290), (81, 315580), (90, 284022), (93, 274860), (108, 236685), (124, 206145), (135, 189348), (155, 164916), (162, 157790), (180, 142011), (186, 137430), (270, 94674), (279, 91620), (310, 82458), (324, 78895), (372, 68715), (405, 63116), (465, 54972), (509, 50220), (540, 47337), (558, 45810), (620, 41229), (810, 31558), (837, 30540), (930, 27486), (1018, 25110), (1116, 22905), (1395, 18324), (1527, 16740), (1620, 15779), (1674, 15270), (1860, 13743), (2036, 12555), (2511, 10180), (2545, 10044), (2790, 9162), (3054, 8370), (3348, 7635), (4185, 6108), (4581, 5580), (5022, 5090)]