20783122556

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{70163}}^1$

素因数の和:70394

約数の個数: 48

約数和(自身を含む): 42435187200

約数和(自身を除く): 21652064644

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 149, 284, 298, 497, 596, 994, 1043, 1988, 2086, 4172, 10579, 21158, 42316, 70163, 74053, 140326, 148106, 280652, 296212, 491141, 982282, 1964564, 4981573, 9963146, 10454287, 19926292, 20908574, 34871011, 41817148, 69742022, 73180009, 139484044, 146360018, 292720036, 742254377, 1484508754, 2969017508, 5195780639, 10391561278, 20783122556]

約数ペア:

[(1, 20783122556), (2, 10391561278), (4, 5195780639), (7, 2969017508), (14, 1484508754), (28, 742254377), (71, 292720036), (142, 146360018), (149, 139484044), (284, 73180009), (298, 69742022), (497, 41817148), (596, 34871011), (994, 20908574), (1043, 19926292), (1988, 10454287), (2086, 9963146), (4172, 4981573), (10579, 1964564), (21158, 982282), (42316, 491141), (70163, 296212), (74053, 280652), (140326, 148106)]