258996955

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{191}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 394149888

約数和(自身を除く): 135152933

約数列:

[1, 5, 7, 17, 35, 43, 53, 85, 119, 191, 215, 265, 301, 371, 595, 731, 901, 955, 1337, 1505, 1855, 2279, 3247, 3655, 4505, 5117, 6307, 6685, 8213, 10123, 11395, 15953, 16235, 22729, 25585, 31535, 38743, 41065, 50615, 57491, 70861, 79765, 113645, 139621, 172091, 193715, 271201, 287455, 354305, 435289, 698105, 860455, 977347, 1204637, 1356005, 2176445, 3047023, 4886735, 6023185, 7399913, 15235115, 36999565, 51799391, 258996955]

約数ペア:

[(1, 258996955), (5, 51799391), (7, 36999565), (17, 15235115), (35, 7399913), (43, 6023185), (53, 4886735), (85, 3047023), (119, 2176445), (191, 1356005), (215, 1204637), (265, 977347), (301, 860455), (371, 698105), (595, 435289), (731, 354305), (901, 287455), (955, 271201), (1337, 193715), (1505, 172091), (1855, 139621), (2279, 113645), (3247, 79765), (3655, 70861), (4505, 57491), (5117, 50615), (6307, 41065), (6685, 38743), (8213, 31535), (10123, 25585), (11395, 22729), (15953, 16235)]