20718230

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{97}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 42674688

約数和(自身を除く): 21956458

約数列:

[1, 2, 5, 10, 13, 26, 31, 53, 62, 65, 97, 106, 130, 155, 194, 265, 310, 403, 485, 530, 689, 806, 970, 1261, 1378, 1643, 2015, 2522, 3007, 3286, 3445, 4030, 5141, 6014, 6305, 6890, 8215, 10282, 12610, 15035, 16430, 21359, 25705, 30070, 39091, 42718, 51410, 66833, 78182, 106795, 133666, 159371, 195455, 213590, 318742, 334165, 390910, 668330, 796855, 1593710, 2071823, 4143646, 10359115, 20718230]

約数ペア:

[(1, 20718230), (2, 10359115), (5, 4143646), (10, 2071823), (13, 1593710), (26, 796855), (31, 668330), (53, 390910), (62, 334165), (65, 318742), (97, 213590), (106, 195455), (130, 159371), (155, 133666), (194, 106795), (265, 78182), (310, 66833), (403, 51410), (485, 42718), (530, 39091), (689, 30070), (806, 25705), (970, 21359), (1261, 16430), (1378, 15035), (1643, 12610), (2015, 10282), (2522, 8215), (3007, 6890), (3286, 6305), (3445, 6014), (4030, 5141)]