20085520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:153

約数の個数: 160

約数和(自身を含む): 59996160

約数和(自身を除く): 39910640

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 31, 35, 40, 52, 56, 62, 65, 70, 80, 89, 91, 104, 112, 124, 130, 140, 155, 178, 182, 208, 217, 248, 260, 280, 310, 356, 364, 403, 434, 445, 455, 496, 520, 560, 620, 623, 712, 728, 806, 868, 890, 910, 1040, 1085, 1157, 1240, 1246, 1424, 1456, 1612, 1736, 1780, 1820, 2015, 2170, 2314, 2480, 2492, 2759, 2821, 3115, 3224, 3472, 3560, 3640, 4030, 4340, 4628, 4984, 5518, 5642, 5785, 6230, 6448, 7120, 7280, 8060, 8099, 8680, 9256, 9968, 11036, 11284, 11570, 12460, 13795, 14105, 16120, 16198, 17360, 18512, 19313, 22072, 22568, 23140, 24920, 27590, 28210, 32240, 32396, 35867, 38626, 40495, 44144, 45136, 46280, 49840, 55180, 56420, 64792, 71734, 77252, 80990, 92560, 96565, 110360, 112840, 129584, 143468, 154504, 161980, 179335, 193130, 220720, 225680, 251069, 286936, 309008, 323960, 358670, 386260, 502138, 573872, 647920, 717340, 772520, 1004276, 1255345, 1434680, 1545040, 2008552, 2510690, 2869360, 4017104, 5021380, 10042760, 20085520]

約数ペア:

[(1, 20085520), (2, 10042760), (4, 5021380), (5, 4017104), (7, 2869360), (8, 2510690), (10, 2008552), (13, 1545040), (14, 1434680), (16, 1255345), (20, 1004276), (26, 772520), (28, 717340), (31, 647920), (35, 573872), (40, 502138), (52, 386260), (56, 358670), (62, 323960), (65, 309008), (70, 286936), (80, 251069), (89, 225680), (91, 220720), (104, 193130), (112, 179335), (124, 161980), (130, 154504), (140, 143468), (155, 129584), (178, 112840), (182, 110360), (208, 96565), (217, 92560), (248, 80990), (260, 77252), (280, 71734), (310, 64792), (356, 56420), (364, 55180), (403, 49840), (434, 46280), (445, 45136), (455, 44144), (496, 40495), (520, 38626), (560, 35867), (620, 32396), (623, 32240), (712, 28210), (728, 27590), (806, 24920), (868, 23140), (890, 22568), (910, 22072), (1040, 19313), (1085, 18512), (1157, 17360), (1240, 16198), (1246, 16120), (1424, 14105), (1456, 13795), (1612, 12460), (1736, 11570), (1780, 11284), (1820, 11036), (2015, 9968), (2170, 9256), (2314, 8680), (2480, 8099), (2492, 8060), (2759, 7280), (2821, 7120), (3115, 6448), (3224, 6230), (3472, 5785), (3560, 5642), (3640, 5518), (4030, 4984), (4340, 4628)]