641254250

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{397}}^1$

素因数の和:505

約数の個数: 128

約数和(自身を含む): 1502032896

約数和(自身を除く): 860778646

約数列:

[1, 2, 5, 7, 10, 13, 14, 25, 26, 35, 50, 65, 70, 71, 91, 125, 130, 142, 175, 182, 250, 325, 350, 355, 397, 455, 497, 650, 710, 794, 875, 910, 923, 994, 1625, 1750, 1775, 1846, 1985, 2275, 2485, 2779, 3250, 3550, 3970, 4550, 4615, 4970, 5161, 5558, 6461, 8875, 9230, 9925, 10322, 11375, 12425, 12922, 13895, 17750, 19850, 22750, 23075, 24850, 25805, 27790, 28187, 32305, 36127, 46150, 49625, 51610, 56374, 62125, 64610, 69475, 72254, 99250, 115375, 124250, 129025, 138950, 140935, 161525, 180635, 197309, 230750, 258050, 281870, 323050, 347375, 361270, 366431, 394618, 645125, 694750, 704675, 732862, 807625, 903175, 986545, 1290250, 1409350, 1615250, 1806350, 1832155, 1973090, 2565017, 3523375, 3664310, 4515875, 4932725, 5130034, 7046750, 9031750, 9160775, 9865450, 12825085, 18321550, 24663625, 25650170, 45803875, 49327250, 64125425, 91607750, 128250850, 320627125, 641254250]

約数ペア:

[(1, 641254250), (2, 320627125), (5, 128250850), (7, 91607750), (10, 64125425), (13, 49327250), (14, 45803875), (25, 25650170), (26, 24663625), (35, 18321550), (50, 12825085), (65, 9865450), (70, 9160775), (71, 9031750), (91, 7046750), (125, 5130034), (130, 4932725), (142, 4515875), (175, 3664310), (182, 3523375), (250, 2565017), (325, 1973090), (350, 1832155), (355, 1806350), (397, 1615250), (455, 1409350), (497, 1290250), (650, 986545), (710, 903175), (794, 807625), (875, 732862), (910, 704675), (923, 694750), (994, 645125), (1625, 394618), (1750, 366431), (1775, 361270), (1846, 347375), (1985, 323050), (2275, 281870), (2485, 258050), (2779, 230750), (3250, 197309), (3550, 180635), (3970, 161525), (4550, 140935), (4615, 138950), (4970, 129025), (5161, 124250), (5558, 115375), (6461, 99250), (8875, 72254), (9230, 69475), (9925, 64610), (10322, 62125), (11375, 56374), (12425, 51610), (12922, 49625), (13895, 46150), (17750, 36127), (19850, 32305), (22750, 28187), (23075, 27790), (24850, 25805)]