20123078980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1063}}^1\times {\mathrm{1607}}^1$

素因数の和:2729

約数の個数: 96

約数和(自身を含む): 45989314560

約数和(自身を除く): 25866235580

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1063, 1178, 1607, 2126, 2356, 2945, 3214, 4252, 5315, 5890, 6428, 8035, 10630, 11780, 16070, 20197, 21260, 30533, 32140, 32953, 40394, 49817, 61066, 65906, 80788, 99634, 100985, 122132, 131812, 152665, 164765, 199268, 201970, 249085, 305330, 329530, 403940, 498170, 610660, 626107, 659060, 946523, 996340, 1252214, 1708241, 1893046, 2504428, 3130535, 3416482, 3786092, 4732615, 6261070, 6832964, 8541205, 9465230, 12522140, 17082410, 18930460, 32456579, 34164820, 52955471, 64913158, 105910942, 129826316, 162282895, 211821884, 264777355, 324565790, 529554710, 649131580, 1006153949, 1059109420, 2012307898, 4024615796, 5030769745, 10061539490, 20123078980]

約数ペア:

[(1, 20123078980), (2, 10061539490), (4, 5030769745), (5, 4024615796), (10, 2012307898), (19, 1059109420), (20, 1006153949), (31, 649131580), (38, 529554710), (62, 324565790), (76, 264777355), (95, 211821884), (124, 162282895), (155, 129826316), (190, 105910942), (310, 64913158), (380, 52955471), (589, 34164820), (620, 32456579), (1063, 18930460), (1178, 17082410), (1607, 12522140), (2126, 9465230), (2356, 8541205), (2945, 6832964), (3214, 6261070), (4252, 4732615), (5315, 3786092), (5890, 3416482), (6428, 3130535), (8035, 2504428), (10630, 1893046), (11780, 1708241), (16070, 1252214), (20197, 996340), (21260, 946523), (30533, 659060), (32140, 626107), (32953, 610660), (40394, 498170), (49817, 403940), (61066, 329530), (65906, 305330), (80788, 249085), (99634, 201970), (100985, 199268), (122132, 164765), (131812, 152665)]