20896965

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{239}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 38188800

約数和(自身を除く): 17291835

約数列:

[1, 3, 5, 9, 15, 29, 45, 67, 87, 145, 201, 239, 261, 335, 435, 603, 717, 1005, 1195, 1305, 1943, 2151, 3015, 3585, 5829, 6931, 9715, 10755, 16013, 17487, 20793, 29145, 34655, 48039, 62379, 80065, 87435, 103965, 144117, 240195, 311895, 464377, 720585, 1393131, 2321885, 4179393, 6965655, 20896965]

約数ペア:

[(1, 20896965), (3, 6965655), (5, 4179393), (9, 2321885), (15, 1393131), (29, 720585), (45, 464377), (67, 311895), (87, 240195), (145, 144117), (201, 103965), (239, 87435), (261, 80065), (335, 62379), (435, 48039), (603, 34655), (717, 29145), (1005, 20793), (1195, 17487), (1305, 16013), (1943, 10755), (2151, 9715), (3015, 6931), (3585, 5829)]