78846880

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{113}}^1$

素因数の和:231

約数の個数: 144

約数和(自身を含む): 221061960

約数和(自身を除く): 142215080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 89, 98, 112, 113, 140, 160, 178, 196, 224, 226, 245, 280, 356, 392, 445, 452, 490, 560, 565, 623, 712, 784, 791, 890, 904, 980, 1120, 1130, 1246, 1424, 1568, 1582, 1780, 1808, 1960, 2260, 2492, 2848, 3115, 3164, 3560, 3616, 3920, 3955, 4361, 4520, 4984, 5537, 6230, 6328, 7120, 7840, 7910, 8722, 9040, 9968, 10057, 11074, 12460, 12656, 14240, 15820, 17444, 18080, 19936, 20114, 21805, 22148, 24920, 25312, 27685, 31640, 34888, 40228, 43610, 44296, 49840, 50285, 55370, 63280, 69776, 70399, 80456, 87220, 88592, 99680, 100570, 110740, 126560, 139552, 140798, 160912, 174440, 177184, 201140, 221480, 281596, 321824, 348880, 351995, 402280, 442960, 492793, 563192, 697760, 703990, 804560, 885920, 985586, 1126384, 1407980, 1609120, 1971172, 2252768, 2463965, 2815960, 3942344, 4927930, 5631920, 7884688, 9855860, 11263840, 15769376, 19711720, 39423440, 78846880]

約数ペア:

[(1, 78846880), (2, 39423440), (4, 19711720), (5, 15769376), (7, 11263840), (8, 9855860), (10, 7884688), (14, 5631920), (16, 4927930), (20, 3942344), (28, 2815960), (32, 2463965), (35, 2252768), (40, 1971172), (49, 1609120), (56, 1407980), (70, 1126384), (80, 985586), (89, 885920), (98, 804560), (112, 703990), (113, 697760), (140, 563192), (160, 492793), (178, 442960), (196, 402280), (224, 351995), (226, 348880), (245, 321824), (280, 281596), (356, 221480), (392, 201140), (445, 177184), (452, 174440), (490, 160912), (560, 140798), (565, 139552), (623, 126560), (712, 110740), (784, 100570), (791, 99680), (890, 88592), (904, 87220), (980, 80456), (1120, 70399), (1130, 69776), (1246, 63280), (1424, 55370), (1568, 50285), (1582, 49840), (1780, 44296), (1808, 43610), (1960, 40228), (2260, 34888), (2492, 31640), (2848, 27685), (3115, 25312), (3164, 24920), (3560, 22148), (3616, 21805), (3920, 20114), (3955, 19936), (4361, 18080), (4520, 17444), (4984, 15820), (5537, 14240), (6230, 12656), (6328, 12460), (7120, 11074), (7840, 10057), (7910, 9968), (8722, 9040)]