68750720

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1$

素因数の和:196

約数の個数: 128

約数和(自身を含む): 178459200

約数和(自身を除く): 109708480

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 71, 80, 85, 89, 128, 136, 142, 160, 170, 178, 272, 284, 320, 340, 355, 356, 445, 544, 568, 640, 680, 710, 712, 890, 1088, 1136, 1207, 1360, 1420, 1424, 1513, 1780, 2176, 2272, 2414, 2720, 2840, 2848, 3026, 3560, 4544, 4828, 5440, 5680, 5696, 6035, 6052, 6319, 7120, 7565, 9088, 9656, 10880, 11360, 11392, 12070, 12104, 12638, 14240, 15130, 19312, 22720, 24140, 24208, 25276, 28480, 30260, 31595, 38624, 45440, 48280, 48416, 50552, 56960, 60520, 63190, 77248, 96560, 96832, 101104, 107423, 121040, 126380, 154496, 193120, 193664, 202208, 214846, 242080, 252760, 386240, 404416, 429692, 484160, 505520, 537115, 772480, 808832, 859384, 968320, 1011040, 1074230, 1718768, 2022080, 2148460, 3437536, 4044160, 4296920, 6875072, 8593840, 13750144, 17187680, 34375360, 68750720]

約数ペア:

[(1, 68750720), (2, 34375360), (4, 17187680), (5, 13750144), (8, 8593840), (10, 6875072), (16, 4296920), (17, 4044160), (20, 3437536), (32, 2148460), (34, 2022080), (40, 1718768), (64, 1074230), (68, 1011040), (71, 968320), (80, 859384), (85, 808832), (89, 772480), (128, 537115), (136, 505520), (142, 484160), (160, 429692), (170, 404416), (178, 386240), (272, 252760), (284, 242080), (320, 214846), (340, 202208), (355, 193664), (356, 193120), (445, 154496), (544, 126380), (568, 121040), (640, 107423), (680, 101104), (710, 96832), (712, 96560), (890, 77248), (1088, 63190), (1136, 60520), (1207, 56960), (1360, 50552), (1420, 48416), (1424, 48280), (1513, 45440), (1780, 38624), (2176, 31595), (2272, 30260), (2414, 28480), (2720, 25276), (2840, 24208), (2848, 24140), (3026, 22720), (3560, 19312), (4544, 15130), (4828, 14240), (5440, 12638), (5680, 12104), (5696, 12070), (6035, 11392), (6052, 11360), (6319, 10880), (7120, 9656), (7565, 9088)]