21000879790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{44389}}^1$

素因数の和:44458

約数の個数: 96

約数和(自身を含む): 45908493120

約数和(自身を除く): 24907613330

約数列:

[1, 2, 5, 10, 11, 17, 22, 23, 34, 46, 55, 85, 110, 115, 121, 170, 187, 230, 242, 253, 374, 391, 506, 605, 782, 935, 1210, 1265, 1870, 1955, 2057, 2530, 2783, 3910, 4114, 4301, 5566, 8602, 10285, 13915, 20570, 21505, 27830, 43010, 44389, 47311, 88778, 94622, 221945, 236555, 443890, 473110, 488279, 754613, 976558, 1020947, 1509226, 2041894, 2441395, 3773065, 4882790, 5104735, 5371069, 7546130, 8300743, 10209470, 10742138, 11230417, 16601486, 17356099, 22460834, 26855345, 34712198, 41503715, 53710690, 56152085, 83007430, 86780495, 91308173, 112304170, 123534587, 173560990, 182616346, 190917089, 247069174, 381834178, 456540865, 617672935, 913081730, 954585445, 1235345870, 1909170890, 2100087979, 4200175958, 10500439895, 21000879790]

約数ペア:

[(1, 21000879790), (2, 10500439895), (5, 4200175958), (10, 2100087979), (11, 1909170890), (17, 1235345870), (22, 954585445), (23, 913081730), (34, 617672935), (46, 456540865), (55, 381834178), (85, 247069174), (110, 190917089), (115, 182616346), (121, 173560990), (170, 123534587), (187, 112304170), (230, 91308173), (242, 86780495), (253, 83007430), (374, 56152085), (391, 53710690), (506, 41503715), (605, 34712198), (782, 26855345), (935, 22460834), (1210, 17356099), (1265, 16601486), (1870, 11230417), (1955, 10742138), (2057, 10209470), (2530, 8300743), (2783, 7546130), (3910, 5371069), (4114, 5104735), (4301, 4882790), (5566, 3773065), (8602, 2441395), (10285, 2041894), (13915, 1509226), (20570, 1020947), (21505, 976558), (27830, 754613), (43010, 488279), (44389, 473110), (47311, 443890), (88778, 236555), (94622, 221945)]