21159540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{269}}^1$

素因数の和:326

約数の個数: 144

約数和(自身を含む): 70761600

約数和(自身を除く): 49602060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 23, 30, 36, 38, 45, 46, 57, 60, 69, 76, 90, 92, 95, 114, 115, 138, 171, 180, 190, 207, 228, 230, 269, 276, 285, 342, 345, 380, 414, 437, 460, 538, 570, 684, 690, 807, 828, 855, 874, 1035, 1076, 1140, 1311, 1345, 1380, 1614, 1710, 1748, 2070, 2185, 2421, 2622, 2690, 3228, 3420, 3933, 4035, 4140, 4370, 4842, 5111, 5244, 5380, 6187, 6555, 7866, 8070, 8740, 9684, 10222, 12105, 12374, 13110, 15333, 15732, 16140, 18561, 19665, 20444, 24210, 24748, 25555, 26220, 30666, 30935, 37122, 39330, 45999, 48420, 51110, 55683, 61332, 61870, 74244, 76665, 78660, 91998, 92805, 102220, 111366, 117553, 123740, 153330, 183996, 185610, 222732, 229995, 235106, 278415, 306660, 352659, 371220, 459990, 470212, 556830, 587765, 705318, 919980, 1057977, 1113660, 1175530, 1410636, 1763295, 2115954, 2351060, 3526590, 4231908, 5289885, 7053180, 10579770, 21159540]

約数ペア:

[(1, 21159540), (2, 10579770), (3, 7053180), (4, 5289885), (5, 4231908), (6, 3526590), (9, 2351060), (10, 2115954), (12, 1763295), (15, 1410636), (18, 1175530), (19, 1113660), (20, 1057977), (23, 919980), (30, 705318), (36, 587765), (38, 556830), (45, 470212), (46, 459990), (57, 371220), (60, 352659), (69, 306660), (76, 278415), (90, 235106), (92, 229995), (95, 222732), (114, 185610), (115, 183996), (138, 153330), (171, 123740), (180, 117553), (190, 111366), (207, 102220), (228, 92805), (230, 91998), (269, 78660), (276, 76665), (285, 74244), (342, 61870), (345, 61332), (380, 55683), (414, 51110), (437, 48420), (460, 45999), (538, 39330), (570, 37122), (684, 30935), (690, 30666), (807, 26220), (828, 25555), (855, 24748), (874, 24210), (1035, 20444), (1076, 19665), (1140, 18561), (1311, 16140), (1345, 15732), (1380, 15333), (1614, 13110), (1710, 12374), (1748, 12105), (2070, 10222), (2185, 9684), (2421, 8740), (2622, 8070), (2690, 7866), (3228, 6555), (3420, 6187), (3933, 5380), (4035, 5244), (4140, 5111), (4370, 4842)]