256260890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1\times {\mathrm{311}}^1$

素因数の和:503

約数の個数: 64

約数和(自身を含む): 507057408

約数和(自身を除く): 250796518

約数列:

[1, 2, 5, 10, 17, 34, 37, 74, 85, 131, 170, 185, 262, 311, 370, 622, 629, 655, 1258, 1310, 1555, 2227, 3110, 3145, 4454, 4847, 5287, 6290, 9694, 10574, 11135, 11507, 22270, 23014, 24235, 26435, 40741, 48470, 52870, 57535, 81482, 82399, 115070, 164798, 195619, 203705, 391238, 407410, 411995, 692597, 823990, 978095, 1385194, 1507417, 1956190, 3014834, 3462985, 6925970, 7537085, 15074170, 25626089, 51252178, 128130445, 256260890]

約数ペア:

[(1, 256260890), (2, 128130445), (5, 51252178), (10, 25626089), (17, 15074170), (34, 7537085), (37, 6925970), (74, 3462985), (85, 3014834), (131, 1956190), (170, 1507417), (185, 1385194), (262, 978095), (311, 823990), (370, 692597), (622, 411995), (629, 407410), (655, 391238), (1258, 203705), (1310, 195619), (1555, 164798), (2227, 115070), (3110, 82399), (3145, 81482), (4454, 57535), (4847, 52870), (5287, 48470), (6290, 40741), (9694, 26435), (10574, 24235), (11135, 23014), (11507, 22270)]