21747572

素因数分解:

$2^2\times 7^3\times {\mathrm{11}}^2\times {\mathrm{131}}^1$

素因数の和:178

約数の個数: 72

約数和(自身を含む): 49156800

約数和(自身を除く): 27409228

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 49, 77, 98, 121, 131, 154, 196, 242, 262, 308, 343, 484, 524, 539, 686, 847, 917, 1078, 1372, 1441, 1694, 1834, 2156, 2882, 3388, 3668, 3773, 5764, 5929, 6419, 7546, 10087, 11858, 12838, 15092, 15851, 20174, 23716, 25676, 31702, 40348, 41503, 44933, 63404, 70609, 83006, 89866, 110957, 141218, 166012, 179732, 221914, 282436, 443828, 494263, 776699, 988526, 1553398, 1977052, 3106796, 5436893, 10873786, 21747572]

約数ペア:

[(1, 21747572), (2, 10873786), (4, 5436893), (7, 3106796), (11, 1977052), (14, 1553398), (22, 988526), (28, 776699), (44, 494263), (49, 443828), (77, 282436), (98, 221914), (121, 179732), (131, 166012), (154, 141218), (196, 110957), (242, 89866), (262, 83006), (308, 70609), (343, 63404), (484, 44933), (524, 41503), (539, 40348), (686, 31702), (847, 25676), (917, 23716), (1078, 20174), (1372, 15851), (1441, 15092), (1694, 12838), (1834, 11858), (2156, 10087), (2882, 7546), (3388, 6419), (3668, 5929), (3773, 5764)]