19924785

素因数分解:

$3^5\times 5^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1$

素因数の和:97

約数の個数: 72

約数和(自身を含む): 38648064

約数和(自身を除く): 18723279

約数列:

[1, 3, 5, 9, 15, 23, 27, 31, 45, 69, 81, 93, 115, 135, 155, 207, 243, 279, 345, 405, 465, 529, 621, 713, 837, 1035, 1215, 1395, 1587, 1863, 2139, 2511, 2645, 3105, 3565, 4185, 4761, 5589, 6417, 7533, 7935, 9315, 10695, 12555, 14283, 16399, 19251, 23805, 27945, 32085, 37665, 42849, 49197, 57753, 71415, 81995, 96255, 128547, 147591, 173259, 214245, 245985, 288765, 442773, 642735, 737955, 866295, 1328319, 2213865, 3984957, 6641595, 19924785]

約数ペア:

[(1, 19924785), (3, 6641595), (5, 3984957), (9, 2213865), (15, 1328319), (23, 866295), (27, 737955), (31, 642735), (45, 442773), (69, 288765), (81, 245985), (93, 214245), (115, 173259), (135, 147591), (155, 128547), (207, 96255), (243, 81995), (279, 71415), (345, 57753), (405, 49197), (465, 42849), (529, 37665), (621, 32085), (713, 27945), (837, 23805), (1035, 19251), (1215, 16399), (1395, 14283), (1587, 12555), (1863, 10695), (2139, 9315), (2511, 7935), (2645, 7533), (3105, 6417), (3565, 5589), (4185, 4761)]