18805995

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:133

約数の個数: 96

約数和(自身を含む): 38997504

約数和(自身を除く): 20191509

約数列:

[1, 3, 5, 9, 13, 15, 17, 31, 39, 45, 51, 61, 65, 85, 93, 117, 153, 155, 183, 195, 221, 255, 279, 305, 403, 465, 527, 549, 585, 663, 765, 793, 915, 1037, 1105, 1209, 1395, 1581, 1891, 1989, 2015, 2379, 2635, 2745, 3111, 3315, 3627, 3965, 4743, 5185, 5673, 6045, 6851, 7137, 7905, 9333, 9455, 9945, 11895, 13481, 15555, 17019, 18135, 20553, 23715, 24583, 28365, 32147, 34255, 35685, 40443, 46665, 61659, 67405, 73749, 85095, 96441, 102765, 121329, 122915, 160735, 202215, 221247, 289323, 308295, 368745, 417911, 482205, 606645, 1106235, 1253733, 1446615, 2089555, 3761199, 6268665, 18805995]

約数ペア:

[(1, 18805995), (3, 6268665), (5, 3761199), (9, 2089555), (13, 1446615), (15, 1253733), (17, 1106235), (31, 606645), (39, 482205), (45, 417911), (51, 368745), (61, 308295), (65, 289323), (85, 221247), (93, 202215), (117, 160735), (153, 122915), (155, 121329), (183, 102765), (195, 96441), (221, 85095), (255, 73749), (279, 67405), (305, 61659), (403, 46665), (465, 40443), (527, 35685), (549, 34255), (585, 32147), (663, 28365), (765, 24583), (793, 23715), (915, 20553), (1037, 18135), (1105, 17019), (1209, 15555), (1395, 13481), (1581, 11895), (1891, 9945), (1989, 9455), (2015, 9333), (2379, 7905), (2635, 7137), (2745, 6851), (3111, 6045), (3315, 5673), (3627, 5185), (3965, 4743)]