19878900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:150

約数の個数: 144

約数和(自身を含む): 62329344

約数和(自身を除く): 42450444

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 25, 30, 43, 46, 50, 60, 67, 69, 75, 86, 92, 100, 115, 129, 134, 138, 150, 172, 201, 215, 230, 258, 268, 276, 300, 335, 345, 402, 430, 460, 516, 575, 645, 670, 690, 804, 860, 989, 1005, 1075, 1150, 1290, 1340, 1380, 1541, 1675, 1725, 1978, 2010, 2150, 2300, 2580, 2881, 2967, 3082, 3225, 3350, 3450, 3956, 4020, 4300, 4623, 4945, 5025, 5762, 5934, 6164, 6450, 6700, 6900, 7705, 8643, 9246, 9890, 10050, 11524, 11868, 12900, 14405, 14835, 15410, 17286, 18492, 19780, 20100, 23115, 24725, 28810, 29670, 30820, 34572, 38525, 43215, 46230, 49450, 57620, 59340, 66263, 72025, 74175, 77050, 86430, 92460, 98900, 115575, 132526, 144050, 148350, 154100, 172860, 198789, 216075, 231150, 265052, 288100, 296700, 331315, 397578, 432150, 462300, 662630, 795156, 864300, 993945, 1325260, 1656575, 1987890, 3313150, 3975780, 4969725, 6626300, 9939450, 19878900]

約数ペア:

[(1, 19878900), (2, 9939450), (3, 6626300), (4, 4969725), (5, 3975780), (6, 3313150), (10, 1987890), (12, 1656575), (15, 1325260), (20, 993945), (23, 864300), (25, 795156), (30, 662630), (43, 462300), (46, 432150), (50, 397578), (60, 331315), (67, 296700), (69, 288100), (75, 265052), (86, 231150), (92, 216075), (100, 198789), (115, 172860), (129, 154100), (134, 148350), (138, 144050), (150, 132526), (172, 115575), (201, 98900), (215, 92460), (230, 86430), (258, 77050), (268, 74175), (276, 72025), (300, 66263), (335, 59340), (345, 57620), (402, 49450), (430, 46230), (460, 43215), (516, 38525), (575, 34572), (645, 30820), (670, 29670), (690, 28810), (804, 24725), (860, 23115), (989, 20100), (1005, 19780), (1075, 18492), (1150, 17286), (1290, 15410), (1340, 14835), (1380, 14405), (1541, 12900), (1675, 11868), (1725, 11524), (1978, 10050), (2010, 9890), (2150, 9246), (2300, 8643), (2580, 7705), (2881, 6900), (2967, 6700), (3082, 6450), (3225, 6164), (3350, 5934), (3450, 5762), (3956, 5025), (4020, 4945), (4300, 4623)]