164215474900

素因数分解:

$2^2\times 5^2\times {\mathrm{401}}^1\times {\mathrm{1951}}^1\times {\mathrm{2099}}^1$

素因数の和:4465

約数の個数: 72

約数和(自身を含む): 357589612800

約数和(自身を除く): 193374137900

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 401, 802, 1604, 1951, 2005, 2099, 3902, 4010, 4198, 7804, 8020, 8396, 9755, 10025, 10495, 19510, 20050, 20990, 39020, 40100, 41980, 48775, 52475, 97550, 104950, 195100, 209900, 782351, 841699, 1564702, 1683398, 3129404, 3366796, 3911755, 4095149, 4208495, 7823510, 8190298, 8416990, 15647020, 16380596, 16833980, 19558775, 20475745, 21042475, 39117550, 40951490, 42084950, 78235100, 81902980, 84169900, 102378725, 204757450, 409514900, 1642154749, 3284309498, 6568618996, 8210773745, 16421547490, 32843094980, 41053868725, 82107737450, 164215474900]

約数ペア:

[(1, 164215474900), (2, 82107737450), (4, 41053868725), (5, 32843094980), (10, 16421547490), (20, 8210773745), (25, 6568618996), (50, 3284309498), (100, 1642154749), (401, 409514900), (802, 204757450), (1604, 102378725), (1951, 84169900), (2005, 81902980), (2099, 78235100), (3902, 42084950), (4010, 40951490), (4198, 39117550), (7804, 21042475), (8020, 20475745), (8396, 19558775), (9755, 16833980), (10025, 16380596), (10495, 15647020), (19510, 8416990), (20050, 8190298), (20990, 7823510), (39020, 4208495), (40100, 4095149), (41980, 3911755), (48775, 3366796), (52475, 3129404), (97550, 1683398), (104950, 1564702), (195100, 841699), (209900, 782351)]