279561100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1056

約数の個数: 144

約数和(自身を含む): 771506176

約数和(自身を除く): 491945076

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 31, 35, 50, 52, 62, 65, 70, 91, 100, 124, 130, 140, 155, 175, 182, 217, 260, 310, 325, 350, 364, 403, 434, 455, 620, 650, 700, 775, 806, 868, 910, 991, 1085, 1300, 1550, 1612, 1820, 1982, 2015, 2170, 2275, 2821, 3100, 3964, 4030, 4340, 4550, 4955, 5425, 5642, 6937, 8060, 9100, 9910, 10075, 10850, 11284, 12883, 13874, 14105, 19820, 20150, 21700, 24775, 25766, 27748, 28210, 30721, 34685, 40300, 49550, 51532, 56420, 61442, 64415, 69370, 70525, 90181, 99100, 122884, 128830, 138740, 141050, 153605, 173425, 180362, 215047, 257660, 282100, 307210, 322075, 346850, 360724, 399373, 430094, 450905, 614420, 644150, 693700, 768025, 798746, 860188, 901810, 1075235, 1288300, 1536050, 1597492, 1803620, 1996865, 2150470, 2254525, 2795611, 3072100, 3993730, 4300940, 4509050, 5376175, 5591222, 7987460, 9018100, 9984325, 10752350, 11182444, 13978055, 19968650, 21504700, 27956110, 39937300, 55912220, 69890275, 139780550, 279561100]

約数ペア:

[(1, 279561100), (2, 139780550), (4, 69890275), (5, 55912220), (7, 39937300), (10, 27956110), (13, 21504700), (14, 19968650), (20, 13978055), (25, 11182444), (26, 10752350), (28, 9984325), (31, 9018100), (35, 7987460), (50, 5591222), (52, 5376175), (62, 4509050), (65, 4300940), (70, 3993730), (91, 3072100), (100, 2795611), (124, 2254525), (130, 2150470), (140, 1996865), (155, 1803620), (175, 1597492), (182, 1536050), (217, 1288300), (260, 1075235), (310, 901810), (325, 860188), (350, 798746), (364, 768025), (403, 693700), (434, 644150), (455, 614420), (620, 450905), (650, 430094), (700, 399373), (775, 360724), (806, 346850), (868, 322075), (910, 307210), (991, 282100), (1085, 257660), (1300, 215047), (1550, 180362), (1612, 173425), (1820, 153605), (1982, 141050), (2015, 138740), (2170, 128830), (2275, 122884), (2821, 99100), (3100, 90181), (3964, 70525), (4030, 69370), (4340, 64415), (4550, 61442), (4955, 56420), (5425, 51532), (5642, 49550), (6937, 40300), (8060, 34685), (9100, 30721), (9910, 28210), (10075, 27748), (10850, 25766), (11284, 24775), (12883, 21700), (13874, 20150), (14105, 19820)]