208590900

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1399}}^1$

素因数の和:1494

約数の個数: 144

約数和(自身を含む): 699955200

約数和(自身を除く): 491364300

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 71, 75, 84, 100, 105, 140, 142, 150, 175, 210, 213, 284, 300, 350, 355, 420, 426, 497, 525, 700, 710, 852, 994, 1050, 1065, 1399, 1420, 1491, 1775, 1988, 2100, 2130, 2485, 2798, 2982, 3550, 4197, 4260, 4970, 5325, 5596, 5964, 6995, 7100, 7455, 8394, 9793, 9940, 10650, 12425, 13990, 14910, 16788, 19586, 20985, 21300, 24850, 27980, 29379, 29820, 34975, 37275, 39172, 41970, 48965, 49700, 58758, 69950, 74550, 83940, 97930, 99329, 104925, 117516, 139900, 146895, 149100, 195860, 198658, 209850, 244825, 293790, 297987, 397316, 419700, 489650, 496645, 587580, 595974, 695303, 734475, 979300, 993290, 1191948, 1390606, 1468950, 1489935, 1986580, 2085909, 2483225, 2781212, 2937900, 2979870, 3476515, 4171818, 4966450, 5959740, 6953030, 7449675, 8343636, 9932900, 10429545, 13906060, 14899350, 17382575, 20859090, 29798700, 34765150, 41718180, 52147725, 69530300, 104295450, 208590900]

約数ペア:

[(1, 208590900), (2, 104295450), (3, 69530300), (4, 52147725), (5, 41718180), (6, 34765150), (7, 29798700), (10, 20859090), (12, 17382575), (14, 14899350), (15, 13906060), (20, 10429545), (21, 9932900), (25, 8343636), (28, 7449675), (30, 6953030), (35, 5959740), (42, 4966450), (50, 4171818), (60, 3476515), (70, 2979870), (71, 2937900), (75, 2781212), (84, 2483225), (100, 2085909), (105, 1986580), (140, 1489935), (142, 1468950), (150, 1390606), (175, 1191948), (210, 993290), (213, 979300), (284, 734475), (300, 695303), (350, 595974), (355, 587580), (420, 496645), (426, 489650), (497, 419700), (525, 397316), (700, 297987), (710, 293790), (852, 244825), (994, 209850), (1050, 198658), (1065, 195860), (1399, 149100), (1420, 146895), (1491, 139900), (1775, 117516), (1988, 104925), (2100, 99329), (2130, 97930), (2485, 83940), (2798, 74550), (2982, 69950), (3550, 58758), (4197, 49700), (4260, 48965), (4970, 41970), (5325, 39172), (5596, 37275), (5964, 34975), (6995, 29820), (7100, 29379), (7455, 27980), (8394, 24850), (9793, 21300), (9940, 20985), (10650, 19586), (12425, 16788), (13990, 14910)]