81949000

素因数分解:

$2^3\times 5^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{509}}^1$

素因数の和:560

約数の個数: 128

約数和(自身を含む): 229132800

約数和(自身を除く): 147183800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 25, 28, 35, 40, 46, 50, 56, 70, 92, 100, 115, 125, 140, 161, 175, 184, 200, 230, 250, 280, 322, 350, 460, 500, 509, 575, 644, 700, 805, 875, 920, 1000, 1018, 1150, 1288, 1400, 1610, 1750, 2036, 2300, 2545, 2875, 3220, 3500, 3563, 4025, 4072, 4600, 5090, 5750, 6440, 7000, 7126, 8050, 10180, 11500, 11707, 12725, 14252, 16100, 17815, 20125, 20360, 23000, 23414, 25450, 28504, 32200, 35630, 40250, 46828, 50900, 58535, 63625, 71260, 80500, 81949, 89075, 93656, 101800, 117070, 127250, 142520, 161000, 163898, 178150, 234140, 254500, 292675, 327796, 356300, 409745, 445375, 468280, 509000, 585350, 655592, 712600, 819490, 890750, 1170700, 1463375, 1638980, 1781500, 2048725, 2341400, 2926750, 3277960, 3563000, 4097450, 5853500, 8194900, 10243625, 11707000, 16389800, 20487250, 40974500, 81949000]

約数ペア:

[(1, 81949000), (2, 40974500), (4, 20487250), (5, 16389800), (7, 11707000), (8, 10243625), (10, 8194900), (14, 5853500), (20, 4097450), (23, 3563000), (25, 3277960), (28, 2926750), (35, 2341400), (40, 2048725), (46, 1781500), (50, 1638980), (56, 1463375), (70, 1170700), (92, 890750), (100, 819490), (115, 712600), (125, 655592), (140, 585350), (161, 509000), (175, 468280), (184, 445375), (200, 409745), (230, 356300), (250, 327796), (280, 292675), (322, 254500), (350, 234140), (460, 178150), (500, 163898), (509, 161000), (575, 142520), (644, 127250), (700, 117070), (805, 101800), (875, 93656), (920, 89075), (1000, 81949), (1018, 80500), (1150, 71260), (1288, 63625), (1400, 58535), (1610, 50900), (1750, 46828), (2036, 40250), (2300, 35630), (2545, 32200), (2875, 28504), (3220, 25450), (3500, 23414), (3563, 23000), (4025, 20360), (4072, 20125), (4600, 17815), (5090, 16100), (5750, 14252), (6440, 12725), (7000, 11707), (7126, 11500), (8050, 10180)]