20123897805

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{53}}^1\times {\mathrm{137}}^1\times {\mathrm{509}}^1$

素因数の和:732

約数の個数: 144

約数和(自身を含む): 39426594480

約数和(自身を除く): 19302696675

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 53, 55, 99, 121, 137, 159, 165, 265, 363, 411, 477, 495, 509, 583, 605, 685, 795, 1089, 1233, 1507, 1527, 1749, 1815, 2055, 2385, 2545, 2915, 4521, 4581, 5247, 5445, 5599, 6165, 6413, 7261, 7535, 7635, 8745, 13563, 16577, 16797, 19239, 21783, 22605, 22905, 26235, 26977, 27995, 32065, 36305, 49731, 50391, 57717, 61589, 65349, 67815, 69733, 79871, 80931, 82885, 83985, 96195, 108915, 134885, 149193, 184767, 209199, 239613, 242793, 248655, 251955, 288585, 296747, 307945, 326745, 348665, 399355, 404655, 554301, 627597, 718839, 745965, 767063, 878581, 890241, 923835, 1045995, 1198065, 1213965, 1483735, 2301189, 2635743, 2670723, 2771505, 3137985, 3264217, 3594195, 3695849, 3835315, 4392905, 4451205, 6903567, 7907229, 8437693, 9792651, 11087547, 11505945, 13178715, 13353615, 16321085, 18479245, 25313079, 29377953, 33262641, 34517835, 39536145, 40654339, 42188465, 48963255, 55437735, 75939237, 121963017, 126565395, 146889765, 166313205, 203271695, 365889051, 379696185, 447197729, 609815085, 1341593187, 1829445255, 2235988645, 4024779561, 6707965935, 20123897805]

約数ペア:

[(1, 20123897805), (3, 6707965935), (5, 4024779561), (9, 2235988645), (11, 1829445255), (15, 1341593187), (33, 609815085), (45, 447197729), (53, 379696185), (55, 365889051), (99, 203271695), (121, 166313205), (137, 146889765), (159, 126565395), (165, 121963017), (265, 75939237), (363, 55437735), (411, 48963255), (477, 42188465), (495, 40654339), (509, 39536145), (583, 34517835), (605, 33262641), (685, 29377953), (795, 25313079), (1089, 18479245), (1233, 16321085), (1507, 13353615), (1527, 13178715), (1749, 11505945), (1815, 11087547), (2055, 9792651), (2385, 8437693), (2545, 7907229), (2915, 6903567), (4521, 4451205), (4581, 4392905), (5247, 3835315), (5445, 3695849), (5599, 3594195), (6165, 3264217), (6413, 3137985), (7261, 2771505), (7535, 2670723), (7635, 2635743), (8745, 2301189), (13563, 1483735), (16577, 1213965), (16797, 1198065), (19239, 1045995), (21783, 923835), (22605, 890241), (22905, 878581), (26235, 767063), (26977, 745965), (27995, 718839), (32065, 627597), (36305, 554301), (49731, 404655), (50391, 399355), (57717, 348665), (61589, 326745), (65349, 307945), (67815, 296747), (69733, 288585), (79871, 251955), (80931, 248655), (82885, 242793), (83985, 239613), (96195, 209199), (108915, 184767), (134885, 149193)]