21000314870

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1\times {\mathrm{18517}}^1$

素因数の和:18717

約数の個数: 64

約数和(自身を含む): 40958853120

約数和(自身を除く): 19958538250

約数列:

[1, 2, 5, 10, 19, 38, 47, 94, 95, 127, 190, 235, 254, 470, 635, 893, 1270, 1786, 2413, 4465, 4826, 5969, 8930, 11938, 12065, 18517, 24130, 29845, 37034, 59690, 92585, 113411, 185170, 226822, 351823, 567055, 703646, 870299, 1134110, 1740598, 1759115, 2351659, 3518230, 4351495, 4703318, 8702990, 11758295, 16535681, 23516590, 33071362, 44681521, 82678405, 89363042, 110527973, 165356810, 221055946, 223407605, 446815210, 552639865, 1105279730, 2100031487, 4200062974, 10500157435, 21000314870]

約数ペア:

[(1, 21000314870), (2, 10500157435), (5, 4200062974), (10, 2100031487), (19, 1105279730), (38, 552639865), (47, 446815210), (94, 223407605), (95, 221055946), (127, 165356810), (190, 110527973), (235, 89363042), (254, 82678405), (470, 44681521), (635, 33071362), (893, 23516590), (1270, 16535681), (1786, 11758295), (2413, 8702990), (4465, 4703318), (4826, 4351495), (5969, 3518230), (8930, 2351659), (11938, 1759115), (12065, 1740598), (18517, 1134110), (24130, 870299), (29845, 703646), (37034, 567055), (59690, 351823), (92585, 226822), (113411, 185170)]