217247265

素因数分解:

$3^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:448

約数の個数: 80

約数和(自身を含む): 411642000

約数和(自身を除く): 194394735

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 53, 81, 87, 135, 145, 159, 261, 265, 349, 405, 435, 477, 783, 795, 1047, 1305, 1431, 1537, 1745, 2349, 2385, 3141, 3915, 4293, 4611, 5235, 7155, 7685, 9423, 10121, 11745, 13833, 15705, 18497, 21465, 23055, 28269, 30363, 41499, 47115, 50605, 55491, 69165, 91089, 92485, 124497, 141345, 151815, 166473, 207495, 273267, 277455, 455445, 499419, 536413, 622485, 819801, 832365, 1366335, 1498257, 1609239, 2497095, 2682065, 4099005, 4827717, 7491285, 8046195, 14483151, 24138585, 43449453, 72415755, 217247265]

約数ペア:

[(1, 217247265), (3, 72415755), (5, 43449453), (9, 24138585), (15, 14483151), (27, 8046195), (29, 7491285), (45, 4827717), (53, 4099005), (81, 2682065), (87, 2497095), (135, 1609239), (145, 1498257), (159, 1366335), (261, 832365), (265, 819801), (349, 622485), (405, 536413), (435, 499419), (477, 455445), (783, 277455), (795, 273267), (1047, 207495), (1305, 166473), (1431, 151815), (1537, 141345), (1745, 124497), (2349, 92485), (2385, 91089), (3141, 69165), (3915, 55491), (4293, 50605), (4611, 47115), (5235, 41499), (7155, 30363), (7685, 28269), (9423, 23055), (10121, 21465), (11745, 18497), (13833, 15705)]