19942400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:90

約数の個数: 132

約数和(自身を含む): 53303880

約数和(自身を除く): 33361480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 41, 50, 64, 76, 80, 82, 95, 100, 128, 152, 160, 164, 190, 200, 205, 256, 304, 320, 328, 380, 400, 410, 475, 512, 608, 640, 656, 760, 779, 800, 820, 950, 1024, 1025, 1216, 1280, 1312, 1520, 1558, 1600, 1640, 1900, 2050, 2432, 2560, 2624, 3040, 3116, 3200, 3280, 3800, 3895, 4100, 4864, 5120, 5248, 6080, 6232, 6400, 6560, 7600, 7790, 8200, 9728, 10496, 12160, 12464, 12800, 13120, 15200, 15580, 16400, 19456, 19475, 20992, 24320, 24928, 25600, 26240, 30400, 31160, 32800, 38950, 41984, 48640, 49856, 52480, 60800, 62320, 65600, 77900, 97280, 99712, 104960, 121600, 124640, 131200, 155800, 199424, 209920, 243200, 249280, 262400, 311600, 398848, 486400, 498560, 524800, 623200, 797696, 997120, 1049600, 1246400, 1994240, 2492800, 3988480, 4985600, 9971200, 19942400]

約数ペア:

[(1, 19942400), (2, 9971200), (4, 4985600), (5, 3988480), (8, 2492800), (10, 1994240), (16, 1246400), (19, 1049600), (20, 997120), (25, 797696), (32, 623200), (38, 524800), (40, 498560), (41, 486400), (50, 398848), (64, 311600), (76, 262400), (80, 249280), (82, 243200), (95, 209920), (100, 199424), (128, 155800), (152, 131200), (160, 124640), (164, 121600), (190, 104960), (200, 99712), (205, 97280), (256, 77900), (304, 65600), (320, 62320), (328, 60800), (380, 52480), (400, 49856), (410, 48640), (475, 41984), (512, 38950), (608, 32800), (640, 31160), (656, 30400), (760, 26240), (779, 25600), (800, 24928), (820, 24320), (950, 20992), (1024, 19475), (1025, 19456), (1216, 16400), (1280, 15580), (1312, 15200), (1520, 13120), (1558, 12800), (1600, 12464), (1640, 12160), (1900, 10496), (2050, 9728), (2432, 8200), (2560, 7790), (2624, 7600), (3040, 6560), (3116, 6400), (3200, 6232), (3280, 6080), (3800, 5248), (3895, 5120), (4100, 4864)]