19997580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{337}}^1$

素因数の和:415

約数の個数: 96

約数和(自身を含む): 59963904

約数和(自身を除く): 39966324

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 43, 46, 60, 69, 86, 92, 115, 129, 138, 172, 215, 230, 258, 276, 337, 345, 430, 460, 516, 645, 674, 690, 860, 989, 1011, 1290, 1348, 1380, 1685, 1978, 2022, 2580, 2967, 3370, 3956, 4044, 4945, 5055, 5934, 6740, 7751, 9890, 10110, 11868, 14491, 14835, 15502, 19780, 20220, 23253, 28982, 29670, 31004, 38755, 43473, 46506, 57964, 59340, 72455, 77510, 86946, 93012, 116265, 144910, 155020, 173892, 217365, 232530, 289820, 333293, 434730, 465060, 666586, 869460, 999879, 1333172, 1666465, 1999758, 3332930, 3999516, 4999395, 6665860, 9998790, 19997580]

約数ペア:

[(1, 19997580), (2, 9998790), (3, 6665860), (4, 4999395), (5, 3999516), (6, 3332930), (10, 1999758), (12, 1666465), (15, 1333172), (20, 999879), (23, 869460), (30, 666586), (43, 465060), (46, 434730), (60, 333293), (69, 289820), (86, 232530), (92, 217365), (115, 173892), (129, 155020), (138, 144910), (172, 116265), (215, 93012), (230, 86946), (258, 77510), (276, 72455), (337, 59340), (345, 57964), (430, 46506), (460, 43473), (516, 38755), (645, 31004), (674, 29670), (690, 28982), (860, 23253), (989, 20220), (1011, 19780), (1290, 15502), (1348, 14835), (1380, 14491), (1685, 11868), (1978, 10110), (2022, 9890), (2580, 7751), (2967, 6740), (3370, 5934), (3956, 5055), (4044, 4945)]