21005064

素因数分解:

$2^3\times 3^2\times {\mathrm{17}}^1\times {\mathrm{131}}^2$

素因数の和:291

約数の個数: 72

約数和(自身を含む): 60698430

約数和(自身を除く): 39693366

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 17, 18, 24, 34, 36, 51, 68, 72, 102, 131, 136, 153, 204, 262, 306, 393, 408, 524, 612, 786, 1048, 1179, 1224, 1572, 2227, 2358, 3144, 4454, 4716, 6681, 8908, 9432, 13362, 17161, 17816, 20043, 26724, 34322, 40086, 51483, 53448, 68644, 80172, 102966, 137288, 154449, 160344, 205932, 291737, 308898, 411864, 583474, 617796, 875211, 1166948, 1235592, 1750422, 2333896, 2625633, 3500844, 5251266, 7001688, 10502532, 21005064]

約数ペア:

[(1, 21005064), (2, 10502532), (3, 7001688), (4, 5251266), (6, 3500844), (8, 2625633), (9, 2333896), (12, 1750422), (17, 1235592), (18, 1166948), (24, 875211), (34, 617796), (36, 583474), (51, 411864), (68, 308898), (72, 291737), (102, 205932), (131, 160344), (136, 154449), (153, 137288), (204, 102966), (262, 80172), (306, 68644), (393, 53448), (408, 51483), (524, 40086), (612, 34322), (786, 26724), (1048, 20043), (1179, 17816), (1224, 17161), (1572, 13362), (2227, 9432), (2358, 8908), (3144, 6681), (4454, 4716)]