209982500

素因数分解:

$2^2\times 5^4\times 7^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1$

素因数の和:128

約数の個数: 180

約数和(自身を含む): 576265536

約数和(自身を除く): 366283036

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 71, 91, 100, 125, 130, 140, 142, 169, 175, 182, 250, 260, 284, 325, 338, 350, 355, 364, 455, 497, 500, 625, 650, 676, 700, 710, 845, 875, 910, 923, 994, 1183, 1250, 1300, 1420, 1625, 1690, 1750, 1775, 1820, 1846, 1988, 2275, 2366, 2485, 2500, 3250, 3380, 3500, 3550, 3692, 4225, 4375, 4550, 4615, 4732, 4970, 5915, 6461, 6500, 7100, 8125, 8450, 8750, 8875, 9100, 9230, 9940, 11375, 11830, 11999, 12425, 12922, 16250, 16900, 17500, 17750, 18460, 21125, 22750, 23075, 23660, 23998, 24850, 25844, 29575, 32305, 32500, 35500, 42250, 44375, 45500, 46150, 47996, 49700, 56875, 59150, 59995, 62125, 64610, 83993, 84500, 88750, 92300, 105625, 113750, 115375, 118300, 119990, 124250, 129220, 147875, 161525, 167986, 177500, 211250, 227500, 230750, 239980, 248500, 295750, 299975, 310625, 323050, 335972, 419965, 422500, 461500, 576875, 591500, 599950, 621250, 646100, 739375, 807625, 839930, 1153750, 1199900, 1242500, 1478750, 1499875, 1615250, 1679860, 2099825, 2307500, 2957500, 2999750, 3230500, 4038125, 4199650, 5999500, 7499375, 8076250, 8399300, 10499125, 14998750, 16152500, 20998250, 29997500, 41996500, 52495625, 104991250, 209982500]

約数ペア:

[(1, 209982500), (2, 104991250), (4, 52495625), (5, 41996500), (7, 29997500), (10, 20998250), (13, 16152500), (14, 14998750), (20, 10499125), (25, 8399300), (26, 8076250), (28, 7499375), (35, 5999500), (50, 4199650), (52, 4038125), (65, 3230500), (70, 2999750), (71, 2957500), (91, 2307500), (100, 2099825), (125, 1679860), (130, 1615250), (140, 1499875), (142, 1478750), (169, 1242500), (175, 1199900), (182, 1153750), (250, 839930), (260, 807625), (284, 739375), (325, 646100), (338, 621250), (350, 599950), (355, 591500), (364, 576875), (455, 461500), (497, 422500), (500, 419965), (625, 335972), (650, 323050), (676, 310625), (700, 299975), (710, 295750), (845, 248500), (875, 239980), (910, 230750), (923, 227500), (994, 211250), (1183, 177500), (1250, 167986), (1300, 161525), (1420, 147875), (1625, 129220), (1690, 124250), (1750, 119990), (1775, 118300), (1820, 115375), (1846, 113750), (1988, 105625), (2275, 92300), (2366, 88750), (2485, 84500), (2500, 83993), (3250, 64610), (3380, 62125), (3500, 59995), (3550, 59150), (3692, 56875), (4225, 49700), (4375, 47996), (4550, 46150), (4615, 45500), (4732, 44375), (4970, 42250), (5915, 35500), (6461, 32500), (6500, 32305), (7100, 29575), (8125, 25844), (8450, 24850), (8750, 23998), (8875, 23660), (9100, 23075), (9230, 22750), (9940, 21125), (11375, 18460), (11830, 17750), (11999, 17500), (12425, 16900), (12922, 16250)]