201973990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{647}}^1$

素因数の和:757

約数の個数: 64

約数和(自身を含む): 403107840

約数和(自身を除く): 201133850

約数列:

[1, 2, 5, 10, 19, 31, 38, 53, 62, 95, 106, 155, 190, 265, 310, 530, 589, 647, 1007, 1178, 1294, 1643, 2014, 2945, 3235, 3286, 5035, 5890, 6470, 8215, 10070, 12293, 16430, 20057, 24586, 31217, 34291, 40114, 61465, 62434, 68582, 100285, 122930, 156085, 171455, 200570, 312170, 342910, 381083, 651529, 762166, 1063021, 1303058, 1905415, 2126042, 3257645, 3810830, 5315105, 6515290, 10630210, 20197399, 40394798, 100986995, 201973990]

約数ペア:

[(1, 201973990), (2, 100986995), (5, 40394798), (10, 20197399), (19, 10630210), (31, 6515290), (38, 5315105), (53, 3810830), (62, 3257645), (95, 2126042), (106, 1905415), (155, 1303058), (190, 1063021), (265, 762166), (310, 651529), (530, 381083), (589, 342910), (647, 312170), (1007, 200570), (1178, 171455), (1294, 156085), (1643, 122930), (2014, 100285), (2945, 68582), (3235, 62434), (3286, 61465), (5035, 40114), (5890, 34291), (6470, 31217), (8215, 24586), (10070, 20057), (12293, 16430)]