21328132

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{173}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 47487384

約数和(自身を除く): 26159252

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 37, 49, 68, 74, 98, 119, 148, 173, 196, 238, 259, 346, 476, 518, 629, 692, 833, 1036, 1211, 1258, 1666, 1813, 2422, 2516, 2941, 3332, 3626, 4403, 4844, 5882, 6401, 7252, 8477, 8806, 11764, 12802, 16954, 17612, 20587, 25604, 30821, 33908, 41174, 44807, 61642, 82348, 89614, 108817, 123284, 144109, 179228, 217634, 288218, 313649, 435268, 576436, 627298, 761719, 1254596, 1523438, 3046876, 5332033, 10664066, 21328132]

約数ペア:

[(1, 21328132), (2, 10664066), (4, 5332033), (7, 3046876), (14, 1523438), (17, 1254596), (28, 761719), (34, 627298), (37, 576436), (49, 435268), (68, 313649), (74, 288218), (98, 217634), (119, 179228), (148, 144109), (173, 123284), (196, 108817), (238, 89614), (259, 82348), (346, 61642), (476, 44807), (518, 41174), (629, 33908), (692, 30821), (833, 25604), (1036, 20587), (1211, 17612), (1258, 16954), (1666, 12802), (1813, 11764), (2422, 8806), (2516, 8477), (2941, 7252), (3332, 6401), (3626, 5882), (4403, 4844)]