20729800

素因数分解:

$2^3\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:120

約数の個数: 192

約数和(自身を含む): 63745920

約数和(自身を除く): 43016120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 17, 20, 25, 26, 28, 34, 35, 40, 50, 52, 56, 65, 67, 68, 70, 85, 91, 100, 104, 119, 130, 134, 136, 140, 170, 175, 182, 200, 221, 238, 260, 268, 280, 325, 335, 340, 350, 364, 425, 442, 455, 469, 476, 520, 536, 595, 650, 670, 680, 700, 728, 850, 871, 884, 910, 938, 952, 1105, 1139, 1190, 1300, 1340, 1400, 1547, 1675, 1700, 1742, 1768, 1820, 1876, 2210, 2275, 2278, 2345, 2380, 2600, 2680, 2975, 3094, 3350, 3400, 3484, 3640, 3752, 4355, 4420, 4550, 4556, 4690, 4760, 5525, 5695, 5950, 6097, 6188, 6700, 6968, 7735, 7973, 8710, 8840, 9100, 9112, 9380, 11050, 11390, 11725, 11900, 12194, 12376, 13400, 14807, 15470, 15946, 17420, 18200, 18760, 21775, 22100, 22780, 23450, 23800, 24388, 28475, 29614, 30485, 30940, 31892, 34840, 38675, 39865, 43550, 44200, 45560, 46900, 48776, 56950, 59228, 60970, 61880, 63784, 74035, 77350, 79730, 87100, 93800, 103649, 113900, 118456, 121940, 148070, 152425, 154700, 159460, 174200, 199325, 207298, 227800, 243880, 296140, 304850, 309400, 318920, 370175, 398650, 414596, 518245, 592280, 609700, 740350, 797300, 829192, 1036490, 1219400, 1480700, 1594600, 2072980, 2591225, 2961400, 4145960, 5182450, 10364900, 20729800]

約数ペア:

[(1, 20729800), (2, 10364900), (4, 5182450), (5, 4145960), (7, 2961400), (8, 2591225), (10, 2072980), (13, 1594600), (14, 1480700), (17, 1219400), (20, 1036490), (25, 829192), (26, 797300), (28, 740350), (34, 609700), (35, 592280), (40, 518245), (50, 414596), (52, 398650), (56, 370175), (65, 318920), (67, 309400), (68, 304850), (70, 296140), (85, 243880), (91, 227800), (100, 207298), (104, 199325), (119, 174200), (130, 159460), (134, 154700), (136, 152425), (140, 148070), (170, 121940), (175, 118456), (182, 113900), (200, 103649), (221, 93800), (238, 87100), (260, 79730), (268, 77350), (280, 74035), (325, 63784), (335, 61880), (340, 60970), (350, 59228), (364, 56950), (425, 48776), (442, 46900), (455, 45560), (469, 44200), (476, 43550), (520, 39865), (536, 38675), (595, 34840), (650, 31892), (670, 30940), (680, 30485), (700, 29614), (728, 28475), (850, 24388), (871, 23800), (884, 23450), (910, 22780), (938, 22100), (952, 21775), (1105, 18760), (1139, 18200), (1190, 17420), (1300, 15946), (1340, 15470), (1400, 14807), (1547, 13400), (1675, 12376), (1700, 12194), (1742, 11900), (1768, 11725), (1820, 11390), (1876, 11050), (2210, 9380), (2275, 9112), (2278, 9100), (2345, 8840), (2380, 8710), (2600, 7973), (2680, 7735), (2975, 6968), (3094, 6700), (3350, 6188), (3400, 6097), (3484, 5950), (3640, 5695), (3752, 5525), (4355, 4760), (4420, 4690), (4550, 4556)]