20278444160

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{78623}}^1$

素因数の和:78686

約数の個数: 128

約数和(自身を含む): 53892034560

約数和(自身を除く): 33613590400

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 31, 32, 40, 52, 62, 64, 65, 80, 104, 124, 128, 130, 155, 160, 208, 248, 260, 310, 320, 403, 416, 496, 520, 620, 640, 806, 832, 992, 1040, 1240, 1612, 1664, 1984, 2015, 2080, 2480, 3224, 3968, 4030, 4160, 4960, 6448, 8060, 8320, 9920, 12896, 16120, 19840, 25792, 32240, 51584, 64480, 78623, 128960, 157246, 257920, 314492, 393115, 628984, 786230, 1022099, 1257968, 1572460, 2044198, 2437313, 2515936, 3144920, 4088396, 4874626, 5031872, 5110495, 6289840, 8176792, 9749252, 10063744, 10220990, 12186565, 12579680, 16353584, 19498504, 20441980, 24373130, 25159360, 31685069, 32707168, 38997008, 40883960, 48746260, 50318720, 63370138, 65414336, 77994016, 81767920, 97492520, 126740276, 130828672, 155988032, 158425345, 163535840, 194985040, 253480552, 311976064, 316850690, 327071680, 389970080, 506961104, 633701380, 654143360, 779940160, 1013922208, 1267402760, 1559880320, 2027844416, 2534805520, 4055688832, 5069611040, 10139222080, 20278444160]

約数ペア:

[(1, 20278444160), (2, 10139222080), (4, 5069611040), (5, 4055688832), (8, 2534805520), (10, 2027844416), (13, 1559880320), (16, 1267402760), (20, 1013922208), (26, 779940160), (31, 654143360), (32, 633701380), (40, 506961104), (52, 389970080), (62, 327071680), (64, 316850690), (65, 311976064), (80, 253480552), (104, 194985040), (124, 163535840), (128, 158425345), (130, 155988032), (155, 130828672), (160, 126740276), (208, 97492520), (248, 81767920), (260, 77994016), (310, 65414336), (320, 63370138), (403, 50318720), (416, 48746260), (496, 40883960), (520, 38997008), (620, 32707168), (640, 31685069), (806, 25159360), (832, 24373130), (992, 20441980), (1040, 19498504), (1240, 16353584), (1612, 12579680), (1664, 12186565), (1984, 10220990), (2015, 10063744), (2080, 9749252), (2480, 8176792), (3224, 6289840), (3968, 5110495), (4030, 5031872), (4160, 4874626), (4960, 4088396), (6448, 3144920), (8060, 2515936), (8320, 2437313), (9920, 2044198), (12896, 1572460), (16120, 1257968), (19840, 1022099), (25792, 786230), (32240, 628984), (51584, 393115), (64480, 314492), (78623, 257920), (128960, 157246)]