21975590

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:118

約数の個数: 128

約数和(自身を含む): 54190080

約数和(自身を除く): 32214490

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 31, 35, 38, 41, 62, 65, 70, 82, 91, 95, 130, 133, 155, 182, 190, 205, 217, 247, 266, 287, 310, 403, 410, 434, 455, 494, 533, 574, 589, 665, 779, 806, 910, 1066, 1085, 1178, 1235, 1271, 1330, 1435, 1558, 1729, 2015, 2170, 2470, 2542, 2665, 2821, 2870, 2945, 3458, 3731, 3895, 4030, 4123, 5330, 5453, 5642, 5890, 6355, 7462, 7657, 7790, 8246, 8645, 8897, 10127, 10906, 12710, 14105, 15314, 16523, 17290, 17794, 18655, 20254, 20615, 24149, 27265, 28210, 33046, 37310, 38285, 41230, 44485, 48298, 50635, 53599, 54530, 70889, 76570, 82615, 88970, 101270, 107198, 115661, 120745, 141778, 165230, 169043, 231322, 241490, 267995, 313937, 338086, 354445, 535990, 578305, 627874, 708890, 845215, 1156610, 1569685, 1690430, 2197559, 3139370, 4395118, 10987795, 21975590]

約数ペア:

[(1, 21975590), (2, 10987795), (5, 4395118), (7, 3139370), (10, 2197559), (13, 1690430), (14, 1569685), (19, 1156610), (26, 845215), (31, 708890), (35, 627874), (38, 578305), (41, 535990), (62, 354445), (65, 338086), (70, 313937), (82, 267995), (91, 241490), (95, 231322), (130, 169043), (133, 165230), (155, 141778), (182, 120745), (190, 115661), (205, 107198), (217, 101270), (247, 88970), (266, 82615), (287, 76570), (310, 70889), (403, 54530), (410, 53599), (434, 50635), (455, 48298), (494, 44485), (533, 41230), (574, 38285), (589, 37310), (665, 33046), (779, 28210), (806, 27265), (910, 24149), (1066, 20615), (1085, 20254), (1178, 18655), (1235, 17794), (1271, 17290), (1330, 16523), (1435, 15314), (1558, 14105), (1729, 12710), (2015, 10906), (2170, 10127), (2470, 8897), (2542, 8645), (2665, 8246), (2821, 7790), (2870, 7657), (2945, 7462), (3458, 6355), (3731, 5890), (3895, 5642), (4030, 5453), (4123, 5330)]