20681520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1$

素因数の和:207

約数の個数: 160

約数和(自身を含む): 70227648

約数和(自身を除く): 49546128

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 37, 40, 48, 51, 60, 68, 74, 80, 85, 102, 111, 120, 136, 137, 148, 170, 185, 204, 222, 240, 255, 272, 274, 296, 340, 370, 408, 411, 444, 510, 548, 555, 592, 629, 680, 685, 740, 816, 822, 888, 1020, 1096, 1110, 1258, 1360, 1370, 1480, 1644, 1776, 1887, 2040, 2055, 2192, 2220, 2329, 2516, 2740, 2960, 3145, 3288, 3774, 4080, 4110, 4440, 4658, 5032, 5069, 5480, 6290, 6576, 6987, 7548, 8220, 8880, 9316, 9435, 10064, 10138, 10960, 11645, 12580, 13974, 15096, 15207, 16440, 18632, 18870, 20276, 23290, 25160, 25345, 27948, 30192, 30414, 32880, 34935, 37264, 37740, 40552, 46580, 50320, 50690, 55896, 60828, 69870, 75480, 76035, 81104, 86173, 93160, 101380, 111792, 121656, 139740, 150960, 152070, 172346, 186320, 202760, 243312, 258519, 279480, 304140, 344692, 405520, 430865, 517038, 558960, 608280, 689384, 861730, 1034076, 1216560, 1292595, 1378768, 1723460, 2068152, 2585190, 3446920, 4136304, 5170380, 6893840, 10340760, 20681520]

約数ペア:

[(1, 20681520), (2, 10340760), (3, 6893840), (4, 5170380), (5, 4136304), (6, 3446920), (8, 2585190), (10, 2068152), (12, 1723460), (15, 1378768), (16, 1292595), (17, 1216560), (20, 1034076), (24, 861730), (30, 689384), (34, 608280), (37, 558960), (40, 517038), (48, 430865), (51, 405520), (60, 344692), (68, 304140), (74, 279480), (80, 258519), (85, 243312), (102, 202760), (111, 186320), (120, 172346), (136, 152070), (137, 150960), (148, 139740), (170, 121656), (185, 111792), (204, 101380), (222, 93160), (240, 86173), (255, 81104), (272, 76035), (274, 75480), (296, 69870), (340, 60828), (370, 55896), (408, 50690), (411, 50320), (444, 46580), (510, 40552), (548, 37740), (555, 37264), (592, 34935), (629, 32880), (680, 30414), (685, 30192), (740, 27948), (816, 25345), (822, 25160), (888, 23290), (1020, 20276), (1096, 18870), (1110, 18632), (1258, 16440), (1360, 15207), (1370, 15096), (1480, 13974), (1644, 12580), (1776, 11645), (1887, 10960), (2040, 10138), (2055, 10064), (2192, 9435), (2220, 9316), (2329, 8880), (2516, 8220), (2740, 7548), (2960, 6987), (3145, 6576), (3288, 6290), (3774, 5480), (4080, 5069), (4110, 5032), (4440, 4658)]