28940985

素因数分解:

$3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{331}}^1$

素因数の和:438

約数の個数: 48

約数和(自身を含む): 52827840

約数和(自身を除く): 23886855

約数列:

[1, 3, 5, 9, 15, 29, 45, 67, 87, 145, 201, 261, 331, 335, 435, 603, 993, 1005, 1305, 1655, 1943, 2979, 3015, 4965, 5829, 9599, 9715, 14895, 17487, 22177, 28797, 29145, 47995, 66531, 86391, 87435, 110885, 143985, 199593, 332655, 431955, 643133, 997965, 1929399, 3215665, 5788197, 9646995, 28940985]

約数ペア:

[(1, 28940985), (3, 9646995), (5, 5788197), (9, 3215665), (15, 1929399), (29, 997965), (45, 643133), (67, 431955), (87, 332655), (145, 199593), (201, 143985), (261, 110885), (331, 87435), (335, 86391), (435, 66531), (603, 47995), (993, 29145), (1005, 28797), (1305, 22177), (1655, 17487), (1943, 14895), (2979, 9715), (3015, 9599), (4965, 5829)]