21030786

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:141

約数の個数: 128

約数和(自身を含む): 58060800

約数和(自身を除く): 37030014

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 23, 27, 41, 42, 46, 54, 59, 63, 69, 82, 118, 123, 126, 138, 161, 177, 189, 207, 246, 287, 322, 354, 369, 378, 413, 414, 483, 531, 574, 621, 738, 826, 861, 943, 966, 1062, 1107, 1239, 1242, 1357, 1449, 1593, 1722, 1886, 2214, 2419, 2478, 2583, 2714, 2829, 2898, 3186, 3717, 4071, 4347, 4838, 5166, 5658, 6601, 7257, 7434, 7749, 8142, 8487, 8694, 9499, 11151, 12213, 13202, 14514, 15498, 16933, 16974, 18998, 19803, 21771, 22302, 24426, 25461, 28497, 33866, 36639, 39606, 43542, 50799, 50922, 55637, 56994, 59409, 65313, 73278, 85491, 101598, 111274, 118818, 130626, 152397, 166911, 170982, 178227, 256473, 304794, 333822, 356454, 389459, 457191, 500733, 512946, 778918, 914382, 1001466, 1168377, 1502199, 2336754, 3004398, 3505131, 7010262, 10515393, 21030786]

約数ペア:

[(1, 21030786), (2, 10515393), (3, 7010262), (6, 3505131), (7, 3004398), (9, 2336754), (14, 1502199), (18, 1168377), (21, 1001466), (23, 914382), (27, 778918), (41, 512946), (42, 500733), (46, 457191), (54, 389459), (59, 356454), (63, 333822), (69, 304794), (82, 256473), (118, 178227), (123, 170982), (126, 166911), (138, 152397), (161, 130626), (177, 118818), (189, 111274), (207, 101598), (246, 85491), (287, 73278), (322, 65313), (354, 59409), (369, 56994), (378, 55637), (413, 50922), (414, 50799), (483, 43542), (531, 39606), (574, 36639), (621, 33866), (738, 28497), (826, 25461), (861, 24426), (943, 22302), (966, 21771), (1062, 19803), (1107, 18998), (1239, 16974), (1242, 16933), (1357, 15498), (1449, 14514), (1593, 13202), (1722, 12213), (1886, 11151), (2214, 9499), (2419, 8694), (2478, 8487), (2583, 8142), (2714, 7749), (2829, 7434), (2898, 7257), (3186, 6601), (3717, 5658), (4071, 5166), (4347, 4838)]