18926740

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:150

約数の個数: 96

約数和(自身を含む): 48384000

約数和(自身を除く): 29457260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 49, 62, 70, 89, 98, 124, 140, 155, 178, 196, 217, 245, 310, 343, 356, 434, 445, 490, 620, 623, 686, 868, 890, 980, 1085, 1246, 1372, 1519, 1715, 1780, 2170, 2492, 2759, 3038, 3115, 3430, 4340, 4361, 5518, 6076, 6230, 6860, 7595, 8722, 10633, 11036, 12460, 13795, 15190, 17444, 19313, 21266, 21805, 27590, 30380, 30527, 38626, 42532, 43610, 53165, 55180, 61054, 77252, 87220, 96565, 106330, 122108, 135191, 152635, 193130, 212660, 270382, 305270, 386260, 540764, 610540, 675955, 946337, 1351910, 1892674, 2703820, 3785348, 4731685, 9463370, 18926740]

約数ペア:

[(1, 18926740), (2, 9463370), (4, 4731685), (5, 3785348), (7, 2703820), (10, 1892674), (14, 1351910), (20, 946337), (28, 675955), (31, 610540), (35, 540764), (49, 386260), (62, 305270), (70, 270382), (89, 212660), (98, 193130), (124, 152635), (140, 135191), (155, 122108), (178, 106330), (196, 96565), (217, 87220), (245, 77252), (310, 61054), (343, 55180), (356, 53165), (434, 43610), (445, 42532), (490, 38626), (620, 30527), (623, 30380), (686, 27590), (868, 21805), (890, 21266), (980, 19313), (1085, 17444), (1246, 15190), (1372, 13795), (1519, 12460), (1715, 11036), (1780, 10633), (2170, 8722), (2492, 7595), (2759, 6860), (3038, 6230), (3115, 6076), (3430, 5518), (4340, 4361)]