21131460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{541}}^1$

素因数の和:594

約数の個数: 144

約数和(自身を含む): 75758592

約数和(自身を除く): 54627132

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 31, 35, 36, 42, 45, 60, 62, 63, 70, 84, 90, 93, 105, 124, 126, 140, 155, 180, 186, 210, 217, 252, 279, 310, 315, 372, 420, 434, 465, 541, 558, 620, 630, 651, 868, 930, 1082, 1085, 1116, 1260, 1302, 1395, 1623, 1860, 1953, 2164, 2170, 2604, 2705, 2790, 3246, 3255, 3787, 3906, 4340, 4869, 5410, 5580, 6492, 6510, 7574, 7812, 8115, 9738, 9765, 10820, 11361, 13020, 15148, 16230, 16771, 18935, 19476, 19530, 22722, 24345, 32460, 33542, 34083, 37870, 39060, 45444, 48690, 50313, 56805, 67084, 68166, 75740, 83855, 97380, 100626, 113610, 117397, 136332, 150939, 167710, 170415, 201252, 227220, 234794, 251565, 301878, 335420, 340830, 352191, 469588, 503130, 586985, 603756, 681660, 704382, 754695, 1006260, 1056573, 1173970, 1408764, 1509390, 1760955, 2113146, 2347940, 3018780, 3521910, 4226292, 5282865, 7043820, 10565730, 21131460]

約数ペア:

[(1, 21131460), (2, 10565730), (3, 7043820), (4, 5282865), (5, 4226292), (6, 3521910), (7, 3018780), (9, 2347940), (10, 2113146), (12, 1760955), (14, 1509390), (15, 1408764), (18, 1173970), (20, 1056573), (21, 1006260), (28, 754695), (30, 704382), (31, 681660), (35, 603756), (36, 586985), (42, 503130), (45, 469588), (60, 352191), (62, 340830), (63, 335420), (70, 301878), (84, 251565), (90, 234794), (93, 227220), (105, 201252), (124, 170415), (126, 167710), (140, 150939), (155, 136332), (180, 117397), (186, 113610), (210, 100626), (217, 97380), (252, 83855), (279, 75740), (310, 68166), (315, 67084), (372, 56805), (420, 50313), (434, 48690), (465, 45444), (541, 39060), (558, 37870), (620, 34083), (630, 33542), (651, 32460), (868, 24345), (930, 22722), (1082, 19530), (1085, 19476), (1116, 18935), (1260, 16771), (1302, 16230), (1395, 15148), (1623, 13020), (1860, 11361), (1953, 10820), (2164, 9765), (2170, 9738), (2604, 8115), (2705, 7812), (2790, 7574), (3246, 6510), (3255, 6492), (3787, 5580), (3906, 5410), (4340, 4869)]