21491298

素因数分解:

$2^1\times 3^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{571}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 51891840

約数和(自身を除く): 30400542

約数列:

[1, 2, 3, 6, 9, 17, 18, 27, 34, 41, 51, 54, 82, 102, 123, 153, 246, 306, 369, 459, 571, 697, 738, 918, 1107, 1142, 1394, 1713, 2091, 2214, 3426, 4182, 5139, 6273, 9707, 10278, 12546, 15417, 18819, 19414, 23411, 29121, 30834, 37638, 46822, 58242, 70233, 87363, 140466, 174726, 210699, 262089, 397987, 421398, 524178, 632097, 795974, 1193961, 1264194, 2387922, 3581883, 7163766, 10745649, 21491298]

約数ペア:

[(1, 21491298), (2, 10745649), (3, 7163766), (6, 3581883), (9, 2387922), (17, 1264194), (18, 1193961), (27, 795974), (34, 632097), (41, 524178), (51, 421398), (54, 397987), (82, 262089), (102, 210699), (123, 174726), (153, 140466), (246, 87363), (306, 70233), (369, 58242), (459, 46822), (571, 37638), (697, 30834), (738, 29121), (918, 23411), (1107, 19414), (1142, 18819), (1394, 15417), (1713, 12546), (2091, 10278), (2214, 9707), (3426, 6273), (4182, 5139)]