28259865

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 54309528

約数和(自身を除く): 26049663

約数列:

[1, 3, 5, 9, 15, 17, 41, 45, 51, 53, 85, 123, 153, 159, 205, 255, 265, 289, 369, 477, 615, 697, 765, 795, 867, 901, 1445, 1845, 2091, 2173, 2385, 2601, 2703, 3485, 4335, 4505, 6273, 6519, 8109, 10455, 10865, 11849, 13005, 13515, 15317, 19557, 31365, 32595, 35547, 36941, 40545, 45951, 59245, 76585, 97785, 106641, 110823, 137853, 177735, 184705, 229755, 332469, 533205, 554115, 627997, 689265, 1662345, 1883991, 3139985, 5651973, 9419955, 28259865]

約数ペア:

[(1, 28259865), (3, 9419955), (5, 5651973), (9, 3139985), (15, 1883991), (17, 1662345), (41, 689265), (45, 627997), (51, 554115), (53, 533205), (85, 332469), (123, 229755), (153, 184705), (159, 177735), (205, 137853), (255, 110823), (265, 106641), (289, 97785), (369, 76585), (477, 59245), (615, 45951), (697, 40545), (765, 36941), (795, 35547), (867, 32595), (901, 31365), (1445, 19557), (1845, 15317), (2091, 13515), (2173, 13005), (2385, 11849), (2601, 10865), (2703, 10455), (3485, 8109), (4335, 6519), (4505, 6273)]