19180568

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:216

約数の個数: 64

約数和(自身を含む): 41472000

約数和(自身を除く): 22291432

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 79, 88, 89, 124, 158, 178, 248, 316, 341, 356, 632, 682, 712, 869, 979, 1364, 1738, 1958, 2449, 2728, 2759, 3476, 3916, 4898, 5518, 6952, 7031, 7832, 9796, 11036, 14062, 19592, 22072, 26939, 28124, 30349, 53878, 56248, 60698, 77341, 107756, 121396, 154682, 215512, 217961, 242792, 309364, 435922, 618728, 871844, 1743688, 2397571, 4795142, 9590284, 19180568]

約数ペア:

[(1, 19180568), (2, 9590284), (4, 4795142), (8, 2397571), (11, 1743688), (22, 871844), (31, 618728), (44, 435922), (62, 309364), (79, 242792), (88, 217961), (89, 215512), (124, 154682), (158, 121396), (178, 107756), (248, 77341), (316, 60698), (341, 56248), (356, 53878), (632, 30349), (682, 28124), (712, 26939), (869, 22072), (979, 19592), (1364, 14062), (1738, 11036), (1958, 9796), (2449, 7832), (2728, 7031), (2759, 6952), (3476, 5518), (3916, 4898)]