21151260

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1$

素因数の和:185

約数の個数: 192

約数和(自身を含む): 74511360

約数和(自身を除く): 53360100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 23, 26, 27, 30, 36, 39, 45, 46, 52, 54, 60, 65, 69, 78, 90, 92, 108, 115, 117, 130, 131, 135, 138, 156, 180, 195, 207, 230, 234, 260, 262, 270, 276, 299, 345, 351, 390, 393, 414, 460, 468, 524, 540, 585, 598, 621, 655, 690, 702, 780, 786, 828, 897, 1035, 1170, 1179, 1196, 1242, 1310, 1380, 1404, 1495, 1572, 1703, 1755, 1794, 1965, 2070, 2340, 2358, 2484, 2620, 2691, 2990, 3013, 3105, 3406, 3510, 3537, 3588, 3930, 4140, 4485, 4716, 5109, 5382, 5895, 5980, 6026, 6210, 6812, 7020, 7074, 7860, 8073, 8515, 8970, 9039, 10218, 10764, 11790, 12052, 12420, 13455, 14148, 15065, 15327, 16146, 17030, 17685, 17940, 18078, 20436, 23580, 25545, 26910, 27117, 30130, 30654, 32292, 34060, 35370, 36156, 39169, 40365, 45195, 45981, 51090, 53820, 54234, 60260, 61308, 70740, 76635, 78338, 80730, 81351, 90390, 91962, 102180, 108468, 117507, 135585, 153270, 156676, 161460, 162702, 180780, 183924, 195845, 229905, 235014, 271170, 306540, 325404, 352521, 391690, 406755, 459810, 470028, 542340, 587535, 705042, 783380, 813510, 919620, 1057563, 1175070, 1410084, 1627020, 1762605, 2115126, 2350140, 3525210, 4230252, 5287815, 7050420, 10575630, 21151260]

約数ペア:

[(1, 21151260), (2, 10575630), (3, 7050420), (4, 5287815), (5, 4230252), (6, 3525210), (9, 2350140), (10, 2115126), (12, 1762605), (13, 1627020), (15, 1410084), (18, 1175070), (20, 1057563), (23, 919620), (26, 813510), (27, 783380), (30, 705042), (36, 587535), (39, 542340), (45, 470028), (46, 459810), (52, 406755), (54, 391690), (60, 352521), (65, 325404), (69, 306540), (78, 271170), (90, 235014), (92, 229905), (108, 195845), (115, 183924), (117, 180780), (130, 162702), (131, 161460), (135, 156676), (138, 153270), (156, 135585), (180, 117507), (195, 108468), (207, 102180), (230, 91962), (234, 90390), (260, 81351), (262, 80730), (270, 78338), (276, 76635), (299, 70740), (345, 61308), (351, 60260), (390, 54234), (393, 53820), (414, 51090), (460, 45981), (468, 45195), (524, 40365), (540, 39169), (585, 36156), (598, 35370), (621, 34060), (655, 32292), (690, 30654), (702, 30130), (780, 27117), (786, 26910), (828, 25545), (897, 23580), (1035, 20436), (1170, 18078), (1179, 17940), (1196, 17685), (1242, 17030), (1310, 16146), (1380, 15327), (1404, 15065), (1495, 14148), (1572, 13455), (1703, 12420), (1755, 12052), (1794, 11790), (1965, 10764), (2070, 10218), (2340, 9039), (2358, 8970), (2484, 8515), (2620, 8073), (2691, 7860), (2990, 7074), (3013, 7020), (3105, 6812), (3406, 6210), (3510, 6026), (3537, 5980), (3588, 5895), (3930, 5382), (4140, 5109), (4485, 4716)]