21291270

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:750

約数の個数: 128

約数和(自身を含む): 68705280

約数和(自身を除く): 47414010

約数列:

[1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 21, 22, 26, 30, 33, 35, 39, 42, 55, 65, 66, 70, 77, 78, 91, 105, 110, 130, 143, 154, 165, 182, 195, 210, 231, 273, 286, 330, 385, 390, 429, 455, 462, 546, 709, 715, 770, 858, 910, 1001, 1155, 1365, 1418, 1430, 2002, 2127, 2145, 2310, 2730, 3003, 3545, 4254, 4290, 4963, 5005, 6006, 7090, 7799, 9217, 9926, 10010, 10635, 14889, 15015, 15598, 18434, 21270, 23397, 24815, 27651, 29778, 30030, 38995, 46085, 46794, 49630, 54593, 55302, 64519, 74445, 77990, 92170, 101387, 109186, 116985, 129038, 138255, 148890, 163779, 193557, 202774, 233970, 272965, 276510, 304161, 322595, 327558, 387114, 506935, 545930, 608322, 645190, 709709, 818895, 967785, 1013870, 1419418, 1520805, 1637790, 1935570, 2129127, 3041610, 3548545, 4258254, 7097090, 10645635, 21291270]

約数ペア:

[(1, 21291270), (2, 10645635), (3, 7097090), (5, 4258254), (6, 3548545), (7, 3041610), (10, 2129127), (11, 1935570), (13, 1637790), (14, 1520805), (15, 1419418), (21, 1013870), (22, 967785), (26, 818895), (30, 709709), (33, 645190), (35, 608322), (39, 545930), (42, 506935), (55, 387114), (65, 327558), (66, 322595), (70, 304161), (77, 276510), (78, 272965), (91, 233970), (105, 202774), (110, 193557), (130, 163779), (143, 148890), (154, 138255), (165, 129038), (182, 116985), (195, 109186), (210, 101387), (231, 92170), (273, 77990), (286, 74445), (330, 64519), (385, 55302), (390, 54593), (429, 49630), (455, 46794), (462, 46085), (546, 38995), (709, 30030), (715, 29778), (770, 27651), (858, 24815), (910, 23397), (1001, 21270), (1155, 18434), (1365, 15598), (1418, 15015), (1430, 14889), (2002, 10635), (2127, 10010), (2145, 9926), (2310, 9217), (2730, 7799), (3003, 7090), (3545, 6006), (4254, 5005), (4290, 4963)]