21189289136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{2248439}}^1$

素因数の和:2248497

約数の個数: 40

約数和(自身を含む): 44609049600

約数和(自身を除く): 23419760464

約数列:

[1, 2, 4, 8, 16, 19, 31, 38, 62, 76, 124, 152, 248, 304, 496, 589, 1178, 2356, 4712, 9424, 2248439, 4496878, 8993756, 17987512, 35975024, 42720341, 69701609, 85440682, 139403218, 170881364, 278806436, 341762728, 557612872, 683525456, 1115225744, 1324330571, 2648661142, 5297322284, 10594644568, 21189289136]

約数ペア:

[(1, 21189289136), (2, 10594644568), (4, 5297322284), (8, 2648661142), (16, 1324330571), (19, 1115225744), (31, 683525456), (38, 557612872), (62, 341762728), (76, 278806436), (124, 170881364), (152, 139403218), (248, 85440682), (304, 69701609), (496, 42720341), (589, 35975024), (1178, 17987512), (2356, 8993756), (4712, 4496878), (9424, 2248439)]