21317992

素因数分解:

$2^3\times {\mathrm{79}}^1\times {\mathrm{89}}^1\times {\mathrm{379}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 19722008

約数列:

[1, 2, 4, 8, 79, 89, 158, 178, 316, 356, 379, 632, 712, 758, 1516, 3032, 7031, 14062, 28124, 29941, 33731, 56248, 59882, 67462, 119764, 134924, 239528, 269848, 2664749, 5329498, 10658996, 21317992]

約数ペア:

[(1, 21317992), (2, 10658996), (4, 5329498), (8, 2664749), (79, 269848), (89, 239528), (158, 134924), (178, 119764), (316, 67462), (356, 59882), (379, 56248), (632, 33731), (712, 29941), (758, 28124), (1516, 14062), (3032, 7031)]