18236439980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{227}}^1\times {\mathrm{373}}^1$

素因数の和:720

約数の個数: 144

約数和(自身を含む): 42869645280

約数和(自身を除く): 24633205300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 121, 178, 220, 227, 242, 356, 373, 445, 454, 484, 605, 746, 890, 908, 979, 1135, 1210, 1492, 1780, 1865, 1958, 2270, 2420, 2497, 3730, 3916, 4103, 4540, 4895, 4994, 7460, 8206, 9790, 9988, 10769, 12485, 16412, 19580, 20203, 20515, 21538, 24970, 27467, 33197, 40406, 41030, 43076, 45133, 49940, 53845, 54934, 66394, 80812, 82060, 84671, 90266, 101015, 107690, 109868, 132788, 137335, 165985, 169342, 180532, 202030, 215380, 222233, 225665, 274670, 331970, 338684, 365167, 404060, 423355, 444466, 451330, 549340, 663940, 730334, 846710, 888932, 902660, 931381, 1111165, 1460668, 1693420, 1825835, 1862762, 2222330, 2444563, 3651670, 3725524, 4016837, 4444660, 4656905, 4889126, 7303340, 7535719, 8033674, 9313810, 9778252, 10245191, 12222815, 15071438, 16067348, 18627620, 20084185, 20490382, 24445630, 30142876, 37678595, 40168370, 40980764, 48891260, 51225955, 75357190, 80336740, 82892909, 102451910, 150714380, 165785818, 204903820, 331571636, 414464545, 828929090, 911821999, 1657858180, 1823643998, 3647287996, 4559109995, 9118219990, 18236439980]

約数ペア:

[(1, 18236439980), (2, 9118219990), (4, 4559109995), (5, 3647287996), (10, 1823643998), (11, 1657858180), (20, 911821999), (22, 828929090), (44, 414464545), (55, 331571636), (89, 204903820), (110, 165785818), (121, 150714380), (178, 102451910), (220, 82892909), (227, 80336740), (242, 75357190), (356, 51225955), (373, 48891260), (445, 40980764), (454, 40168370), (484, 37678595), (605, 30142876), (746, 24445630), (890, 20490382), (908, 20084185), (979, 18627620), (1135, 16067348), (1210, 15071438), (1492, 12222815), (1780, 10245191), (1865, 9778252), (1958, 9313810), (2270, 8033674), (2420, 7535719), (2497, 7303340), (3730, 4889126), (3916, 4656905), (4103, 4444660), (4540, 4016837), (4895, 3725524), (4994, 3651670), (7460, 2444563), (8206, 2222330), (9790, 1862762), (9988, 1825835), (10769, 1693420), (12485, 1460668), (16412, 1111165), (19580, 931381), (20203, 902660), (20515, 888932), (21538, 846710), (24970, 730334), (27467, 663940), (33197, 549340), (40406, 451330), (41030, 444466), (43076, 423355), (45133, 404060), (49940, 365167), (53845, 338684), (54934, 331970), (66394, 274670), (80812, 225665), (82060, 222233), (84671, 215380), (90266, 202030), (101015, 180532), (107690, 169342), (109868, 165985), (132788, 137335)]