28890351

素因数分解:

$3^4\times 7^2\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:306

約数の個数: 60

約数和(自身を含む): 52141320

約数和(自身を除く): 23250969

約数列:

[1, 3, 7, 9, 21, 27, 29, 49, 63, 81, 87, 147, 189, 203, 251, 261, 441, 567, 609, 753, 783, 1323, 1421, 1757, 1827, 2259, 2349, 3969, 4263, 5271, 5481, 6777, 7279, 12299, 12789, 15813, 16443, 20331, 21837, 36897, 38367, 47439, 50953, 65511, 110691, 115101, 142317, 152859, 196533, 332073, 356671, 458577, 589599, 996219, 1070013, 1375731, 3210039, 4127193, 9630117, 28890351]

約数ペア:

[(1, 28890351), (3, 9630117), (7, 4127193), (9, 3210039), (21, 1375731), (27, 1070013), (29, 996219), (49, 589599), (63, 458577), (81, 356671), (87, 332073), (147, 196533), (189, 152859), (203, 142317), (251, 115101), (261, 110691), (441, 65511), (567, 50953), (609, 47439), (753, 38367), (783, 36897), (1323, 21837), (1421, 20331), (1757, 16443), (1827, 15813), (2259, 12789), (2349, 12299), (3969, 7279), (4263, 6777), (5271, 5481)]