18490640

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:169

約数の個数: 120

約数和(自身を含む): 51525720

約数和(自身を除く): 33035080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 53, 56, 70, 80, 89, 98, 106, 112, 140, 178, 196, 212, 245, 265, 280, 356, 371, 392, 424, 445, 490, 530, 560, 623, 712, 742, 784, 848, 890, 980, 1060, 1246, 1424, 1484, 1780, 1855, 1960, 2120, 2492, 2597, 2968, 3115, 3560, 3710, 3920, 4240, 4361, 4717, 4984, 5194, 5936, 6230, 7120, 7420, 8722, 9434, 9968, 10388, 12460, 12985, 14840, 17444, 18868, 20776, 21805, 23585, 24920, 25970, 29680, 33019, 34888, 37736, 41552, 43610, 47170, 49840, 51940, 66038, 69776, 75472, 87220, 94340, 103880, 132076, 165095, 174440, 188680, 207760, 231133, 264152, 330190, 348880, 377360, 462266, 528304, 660380, 924532, 1155665, 1320760, 1849064, 2311330, 2641520, 3698128, 4622660, 9245320, 18490640]

約数ペア:

[(1, 18490640), (2, 9245320), (4, 4622660), (5, 3698128), (7, 2641520), (8, 2311330), (10, 1849064), (14, 1320760), (16, 1155665), (20, 924532), (28, 660380), (35, 528304), (40, 462266), (49, 377360), (53, 348880), (56, 330190), (70, 264152), (80, 231133), (89, 207760), (98, 188680), (106, 174440), (112, 165095), (140, 132076), (178, 103880), (196, 94340), (212, 87220), (245, 75472), (265, 69776), (280, 66038), (356, 51940), (371, 49840), (392, 47170), (424, 43610), (445, 41552), (490, 37736), (530, 34888), (560, 33019), (623, 29680), (712, 25970), (742, 24920), (784, 23585), (848, 21805), (890, 20776), (980, 18868), (1060, 17444), (1246, 14840), (1424, 12985), (1484, 12460), (1780, 10388), (1855, 9968), (1960, 9434), (2120, 8722), (2492, 7420), (2597, 7120), (2968, 6230), (3115, 5936), (3560, 5194), (3710, 4984), (3920, 4717), (4240, 4361)]