20738690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{503}}^1$

素因数の和:567

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25709950

約数列:

[1, 2, 5, 7, 10, 14, 19, 31, 35, 38, 62, 70, 95, 133, 155, 190, 217, 266, 310, 434, 503, 589, 665, 1006, 1085, 1178, 1330, 2170, 2515, 2945, 3521, 4123, 5030, 5890, 7042, 8246, 9557, 15593, 17605, 19114, 20615, 31186, 35210, 41230, 47785, 66899, 77965, 95570, 109151, 133798, 155930, 218302, 296267, 334495, 545755, 592534, 668990, 1091510, 1481335, 2073869, 2962670, 4147738, 10369345, 20738690]

約数ペア:

[(1, 20738690), (2, 10369345), (5, 4147738), (7, 2962670), (10, 2073869), (14, 1481335), (19, 1091510), (31, 668990), (35, 592534), (38, 545755), (62, 334495), (70, 296267), (95, 218302), (133, 155930), (155, 133798), (190, 109151), (217, 95570), (266, 77965), (310, 66899), (434, 47785), (503, 41230), (589, 35210), (665, 31186), (1006, 20615), (1085, 19114), (1178, 17605), (1330, 15593), (2170, 9557), (2515, 8246), (2945, 7042), (3521, 5890), (4123, 5030)]