2021838200

素因数分解:

$2^3\times 5^2\times {\mathrm{101}}^2\times {\mathrm{991}}^1$

素因数の和:1209

約数の個数: 72

約数和(自身を含む): 4752567840

約数和(自身を除く): 2730729640

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 200, 202, 404, 505, 808, 991, 1010, 1982, 2020, 2525, 3964, 4040, 4955, 5050, 7928, 9910, 10100, 10201, 19820, 20200, 20402, 24775, 39640, 40804, 49550, 51005, 81608, 99100, 100091, 102010, 198200, 200182, 204020, 255025, 400364, 408040, 500455, 510050, 800728, 1000910, 1020100, 2001820, 2040200, 2502275, 4003640, 5004550, 10009100, 10109191, 20018200, 20218382, 40436764, 50545955, 80873528, 101091910, 202183820, 252729775, 404367640, 505459550, 1010919100, 2021838200]

約数ペア:

[(1, 2021838200), (2, 1010919100), (4, 505459550), (5, 404367640), (8, 252729775), (10, 202183820), (20, 101091910), (25, 80873528), (40, 50545955), (50, 40436764), (100, 20218382), (101, 20018200), (200, 10109191), (202, 10009100), (404, 5004550), (505, 4003640), (808, 2502275), (991, 2040200), (1010, 2001820), (1982, 1020100), (2020, 1000910), (2525, 800728), (3964, 510050), (4040, 500455), (4955, 408040), (5050, 400364), (7928, 255025), (9910, 204020), (10100, 200182), (10201, 198200), (19820, 102010), (20200, 100091), (20402, 99100), (24775, 81608), (39640, 51005), (40804, 49550)]