78284920

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{311}}^1$

素因数の和:389

約数の個数: 128

約数和(自身を含む): 215654400

約数和(自身を除く): 137369480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 31, 35, 40, 56, 58, 62, 70, 116, 124, 140, 145, 155, 203, 217, 232, 248, 280, 290, 310, 311, 406, 434, 580, 620, 622, 812, 868, 899, 1015, 1085, 1160, 1240, 1244, 1555, 1624, 1736, 1798, 2030, 2170, 2177, 2488, 3110, 3596, 4060, 4340, 4354, 4495, 6220, 6293, 7192, 8120, 8680, 8708, 8990, 9019, 9641, 10885, 12440, 12586, 17416, 17980, 18038, 19282, 21770, 25172, 31465, 35960, 36076, 38564, 43540, 45095, 48205, 50344, 62930, 63133, 67487, 72152, 77128, 87080, 90190, 96410, 125860, 126266, 134974, 180380, 192820, 251720, 252532, 269948, 279589, 315665, 337435, 360760, 385640, 505064, 539896, 559178, 631330, 674870, 1118356, 1262660, 1349740, 1397945, 1957123, 2236712, 2525320, 2699480, 2795890, 3914246, 5591780, 7828492, 9785615, 11183560, 15656984, 19571230, 39142460, 78284920]

約数ペア:

[(1, 78284920), (2, 39142460), (4, 19571230), (5, 15656984), (7, 11183560), (8, 9785615), (10, 7828492), (14, 5591780), (20, 3914246), (28, 2795890), (29, 2699480), (31, 2525320), (35, 2236712), (40, 1957123), (56, 1397945), (58, 1349740), (62, 1262660), (70, 1118356), (116, 674870), (124, 631330), (140, 559178), (145, 539896), (155, 505064), (203, 385640), (217, 360760), (232, 337435), (248, 315665), (280, 279589), (290, 269948), (310, 252532), (311, 251720), (406, 192820), (434, 180380), (580, 134974), (620, 126266), (622, 125860), (812, 96410), (868, 90190), (899, 87080), (1015, 77128), (1085, 72152), (1160, 67487), (1240, 63133), (1244, 62930), (1555, 50344), (1624, 48205), (1736, 45095), (1798, 43540), (2030, 38564), (2170, 36076), (2177, 35960), (2488, 31465), (3110, 25172), (3596, 21770), (4060, 19282), (4340, 18038), (4354, 17980), (4495, 17416), (6220, 12586), (6293, 12440), (7192, 10885), (8120, 9641), (8680, 9019), (8708, 8990)]