21784680

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{877}}^1$

素因数の和:920

約数の個数: 128

約数和(自身を含む): 75859200

約数和(自身を除く): 54074520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 23, 24, 27, 30, 36, 40, 45, 46, 54, 60, 69, 72, 90, 92, 108, 115, 120, 135, 138, 180, 184, 207, 216, 230, 270, 276, 345, 360, 414, 460, 540, 552, 621, 690, 828, 877, 920, 1035, 1080, 1242, 1380, 1656, 1754, 2070, 2484, 2631, 2760, 3105, 3508, 4140, 4385, 4968, 5262, 6210, 7016, 7893, 8280, 8770, 10524, 12420, 13155, 15786, 17540, 20171, 21048, 23679, 24840, 26310, 31572, 35080, 39465, 40342, 47358, 52620, 60513, 63144, 78930, 80684, 94716, 100855, 105240, 118395, 121026, 157860, 161368, 181539, 189432, 201710, 236790, 242052, 302565, 315720, 363078, 403420, 473580, 484104, 544617, 605130, 726156, 806840, 907695, 947160, 1089234, 1210260, 1452312, 1815390, 2178468, 2420520, 2723085, 3630780, 4356936, 5446170, 7261560, 10892340, 21784680]

約数ペア:

[(1, 21784680), (2, 10892340), (3, 7261560), (4, 5446170), (5, 4356936), (6, 3630780), (8, 2723085), (9, 2420520), (10, 2178468), (12, 1815390), (15, 1452312), (18, 1210260), (20, 1089234), (23, 947160), (24, 907695), (27, 806840), (30, 726156), (36, 605130), (40, 544617), (45, 484104), (46, 473580), (54, 403420), (60, 363078), (69, 315720), (72, 302565), (90, 242052), (92, 236790), (108, 201710), (115, 189432), (120, 181539), (135, 161368), (138, 157860), (180, 121026), (184, 118395), (207, 105240), (216, 100855), (230, 94716), (270, 80684), (276, 78930), (345, 63144), (360, 60513), (414, 52620), (460, 47358), (540, 40342), (552, 39465), (621, 35080), (690, 31572), (828, 26310), (877, 24840), (920, 23679), (1035, 21048), (1080, 20171), (1242, 17540), (1380, 15786), (1656, 13155), (1754, 12420), (2070, 10524), (2484, 8770), (2631, 8280), (2760, 7893), (3105, 7016), (3508, 6210), (4140, 5262), (4385, 4968)]