20440960

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^2$

素因数の和:120

約数の個数: 96

約数和(自身を含む): 52723800

約数和(自身を除く): 32282840

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 41, 64, 76, 80, 82, 95, 128, 152, 160, 164, 190, 205, 304, 320, 328, 380, 410, 608, 640, 656, 760, 779, 820, 1216, 1312, 1520, 1558, 1640, 1681, 2432, 2624, 3040, 3116, 3280, 3362, 3895, 5248, 6080, 6232, 6560, 6724, 7790, 8405, 12160, 12464, 13120, 13448, 15580, 16810, 24928, 26240, 26896, 31160, 31939, 33620, 49856, 53792, 62320, 63878, 67240, 99712, 107584, 124640, 127756, 134480, 159695, 215168, 249280, 255512, 268960, 319390, 498560, 511024, 537920, 638780, 1022048, 1075840, 1277560, 2044096, 2555120, 4088192, 5110240, 10220480, 20440960]

約数ペア:

[(1, 20440960), (2, 10220480), (4, 5110240), (5, 4088192), (8, 2555120), (10, 2044096), (16, 1277560), (19, 1075840), (20, 1022048), (32, 638780), (38, 537920), (40, 511024), (41, 498560), (64, 319390), (76, 268960), (80, 255512), (82, 249280), (95, 215168), (128, 159695), (152, 134480), (160, 127756), (164, 124640), (190, 107584), (205, 99712), (304, 67240), (320, 63878), (328, 62320), (380, 53792), (410, 49856), (608, 33620), (640, 31939), (656, 31160), (760, 26896), (779, 26240), (820, 24928), (1216, 16810), (1312, 15580), (1520, 13448), (1558, 13120), (1640, 12464), (1681, 12160), (2432, 8405), (2624, 7790), (3040, 6724), (3116, 6560), (3280, 6232), (3362, 6080), (3895, 5248)]